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Orcas killing fully grown adult Great White Sharks

Finland Shadow Offline
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#16

One older article about it, that how orcas hunt and kill sharks. Quite interesting.

https://www.telegraph.co.uk/news/earth/wildlife/6668575/Killer-whales-attack-and-eat-sharks.html
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Venezuela epaiva Offline
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#17


*This image is copyright of its original author

*This image is copyright of its original author

*This image is copyright of its original author

*This image is copyright of its original author

*This image is copyright of its original author
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India sanjay Offline
Co-owner of Wildfact
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#18

I think the headline is made to make more sensation than a study. Its true orcas are more powerful and can chase or hunt great white shark but saying will not return for a year and so so... I think its little exaggerated
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United Kingdom Megalodon Offline
Banned
#19
( This post was last modified: 08-15-2019, 10:40 AM by Rishi )

Many people tend to badly overrate the capabilities of Orca's, often ignoring the fact that when Orca's hunt Great White Sharks, they almost always hunt small ones and do so cooperatively, which gives them a huge advantage. It's doubtful if a lone Orca would ever dare to prey on an adult white shark, especially the huge mega-sharks that reach around 18-23 ft and weigh around 2.5 - 3 tonnes.

In a clash, a Great White is yay as capable of destroying an Orca, due to its possibly deadlier weaponry, durability and aggressiveness. An Orca is literally a giant DOLPHIN (Cetacean) which has extremely sensitive skin thats very susceptible to severe damage by the sharks jaws. One clean bite from the white shark, and may be all over for the Orca. The Orca will simply bleed out very quickly, and the shark can even dive down deep and wait for the Orca to bleed out and then finish off the kill.

Lone Orca's always hunt much smaller prey, whereas white sharks will readily kill giant 3-tonne Bull elephant seals and have been observed to hunt giant squids at 4,000 ft depth. An Orca doesn't even compare to these lone predation feats.

To show you what I mean, here's an adult male Orca's jaw gape:


*This image is copyright of its original author


Now imagine that going head-on with this:


*This image is copyright of its original author


The Orca would be in serious trouble if it went head-on as against a Great white. The sharks jaws are massive and devastating and would tear chunks out of the Orcas flesh with ease!

Orca's always hunt white sharks COOPERATIVELY - not single-handedly. Thats a huge difference. If Orca's were solitary predators like the Great white, then there's the Great white shark might just be the undisputed top apex predator of the ocean. Orca's only have the upper-hand over sharks because they run and operate exclusively in packs. Without the pod, I'm sure there would be numerous accounts of white sharks killing Orca's too.

What do you guys think?...
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Rishi Offline
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#20
( This post was last modified: 08-15-2019, 10:35 AM by Rishi )

The original post was edited a to more objective & observative form... less unltraconfident superlative statements, more neutral fact-presentation.
No vs debate allowed here.
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Finland Shadow Offline
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#21
( This post was last modified: 08-15-2019, 11:32 AM by Shadow )

(08-15-2019, 05:41 AM)Megalodon Wrote: Many people tend to badly overrate the capabilities of Orca's, often ignoring the fact that when Orca's hunt Great White Sharks, they almost always hunt small ones and do so cooperatively, which gives them a huge advantage. It's doubtful if a lone Orca would ever dare to prey on an adult white shark, especially the huge mega-sharks that reach around 18-23 ft and weigh around 2.5 - 3 tonnes.

In a clash, a Great White is yay as capable of destroying an Orca, due to its possibly deadlier weaponry, durability and aggressiveness. An Orca is literally a giant DOLPHIN (Cetacean) which has extremely sensitive skin thats very susceptible to severe damage by the sharks jaws. One clean bite from the white shark, and may be all over for the Orca. The Orca will simply bleed out very quickly, and the shark can even dive down deep and wait for the Orca to bleed out and then finish off the kill.

Lone Orca's always hunt much smaller prey, whereas white sharks will readily kill giant 3-tonne Bull elephant seals and have been observed to hunt giant squids at 4,000 ft depth. An Orca doesn't even compare to these lone predation feats.

To show you what I mean, here's an adult male Orca's jaw gape:


*This image is copyright of its original author


Now imagine that going head-on with this:


*This image is copyright of its original author


The Orca would be in serious trouble if it went head-on as against a Great white. The sharks jaws are massive and devastating and would tear chunks out of the Orcas flesh with ease!

Orca's always hunt white sharks COOPERATIVELY - not single-handedly. Thats a huge difference. If Orca's were solitary predators like the Great white, then there's the Great white shark might just be the undisputed top apex predator of the ocean. Orca's only have the upper-hand over sharks because they run and operate exclusively in packs. Without the pod, I'm sure there would be numerous accounts of white sharks killing Orca's too.

What do you guys think?...

Orca is clearly bigger animal, size matters in wildlife. Also orcas are without a doubt very intelligent. It is quite difficult to see what a great white shark could do really. When we are talking about apex predators of seas, orcas are on the top for many good reasons. I also like sharks, but in time, when learning more about these animals, it became clear to me, that great white shark or any shark aren´t really apex predators, because they are also prey. Orca is only apex predator, when we talk about "big boys". Predator sharks are simply too small. And it seems to be so, that many sharks are quite uncomfortable with dolphins too, even when dolphins are clearly smaller.

Anyway even though, when younger, great white shark was kind of "my hero", I´ve learned to understand, that it can´t do what it wants and it also knows fear, when a bigger predator approaches. Wildlife is merciless and size does matter there.

This is how I see it.
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United Kingdom Spalea Offline
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#22

@Megalodon :

About #19: I don't really imagine how even an extra big 3-tons great white shark could be able to fight an adult 8-tons orca and kill it. Stop fantasizing and let us remain realist !

Or show some proofs confirming your assertions.
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United Kingdom Megalodon Offline
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#23

(08-15-2019, 11:05 AM)Shadow Wrote:
(08-15-2019, 05:41 AM)Megalodon Wrote: Many people tend to badly overrate the capabilities of Orca's, often ignoring the fact that when Orca's hunt Great White Sharks, they almost always hunt small ones and do so cooperatively, which gives them a huge advantage. It's doubtful if a lone Orca would ever dare to prey on an adult white shark, especially the huge mega-sharks that reach around 18-23 ft and weigh around 2.5 - 3 tonnes.

In a clash, a Great White is yay as capable of destroying an Orca, due to its possibly deadlier weaponry, durability and aggressiveness. An Orca is literally a giant DOLPHIN (Cetacean) which has extremely sensitive skin thats very susceptible to severe damage by the sharks jaws. One clean bite from the white shark, and may be all over for the Orca. The Orca will simply bleed out very quickly, and the shark can even dive down deep and wait for the Orca to bleed out and then finish off the kill.

Lone Orca's always hunt much smaller prey, whereas white sharks will readily kill giant 3-tonne Bull elephant seals and have been observed to hunt giant squids at 4,000 ft depth. An Orca doesn't even compare to these lone predation feats.

To show you what I mean, here's an adult male Orca's jaw gape:


*This image is copyright of its original author


Now imagine that going head-on with this:


*This image is copyright of its original author


The Orca would be in serious trouble if it went head-on as against a Great white. The sharks jaws are massive and devastating and would tear chunks out of the Orcas flesh with ease!

Orca's always hunt white sharks COOPERATIVELY - not single-handedly. Thats a huge difference. If Orca's were solitary predators like the Great white, then there's the Great white shark might just be the undisputed top apex predator of the ocean. Orca's only have the upper-hand over sharks because they run and operate exclusively in packs. Without the pod, I'm sure there would be numerous accounts of white sharks killing Orca's too.

What do you guys think?...

Orca is clearly bigger animal, size matters in wildlife. Also orcas are without a doubt very intelligent. It is quite difficult to see what a great white shark could do really. When we are talking about apex predators of seas, orcas are on the top for many good reasons. I also like sharks, but in time, when learning more about these animals, it became clear to me, that great white shark or any shark aren´t really apex predators, because they are also prey. Orca is only apex predator, when we talk about "big boys". Predator sharks are simply too small. And it seems to be so, that many sharks are quite uncomfortable with dolphins too, even when dolphins are clearly smaller.

Anyway even though, when younger, great white shark was kind of "my hero", I´ve learned to understand, that it can´t do what it wants and it also knows fear, when a bigger predator approaches. Wildlife is merciless and size does matter there.

This is how I see it.

You never acknowledged anything I said. Size does not always matter in nature, there's many factors that can overcome a size advantage. This has been proven over and over again. For example, in Russia, tigers fight, hunt and kill larger Brown bears. If the size theory that your suggesting is true, then tigers would not hunt another larger predator as powerful as a Brown bear. But the reality is that they do, and do so successfully most of the time. Just like how the tiger possesses many physical advantages over larger Brown bears which makes them neutralize the Brown bears size and weight, the white shark also possesses certain physical attributes that can easily help it overcome an Orca in a head-on battle. In fact, in a head-on battle - the shark possesses the more important and vital advantages over an Orca, like teeth, jaws and durability.

Here's the facts that you never acknowledged in my first post:

1) Orca's ALWAYS hunt sharks cooperatively, using strength in numbers. Big advantage!

2) The white sharks teeth and jaws are far more deadlier, perfectly designed to tear off huge chunks off flesh in a single bite - especially from very soft, sensitive skinned Cetaceans. (Orca's, Dolphins)

3) The only reason why Orca's dominate over sharks is due to the clear fact that they run in packs. - There's a very good reason why marine experts refer to the Orca as the "Wolves of the Sea" its because they always hunt cooperatively with their pod. 

And Great whites don't struggle with Dolphins. Who told you that?...White sharks will readily predate on full-grown adult Dolphins, Porpoises and even small whales. Great whites even habitually attack and kill giant Bull elephant seals which can weigh anywhere from 2 - 3 tonnes. As heavy as the shark itself. The largest prey I've ever seen a LONE Orca kill is an adult fur seal. Thats nothing. White sharks, single-handedly, hunt and kill FAR LARGER and more dangerous prey than a lone Orca does. 

I sincerely and very strongly believe that the white shark has gotten very wrong and UNFAIR criticism when pitted against Orca's. Barely no one mentions the fact that Orca's primarily attack the much smaller juvenile sharks, and how they AMBUSH and cooperatively hunt them. Most people act like (I'm not saying you) Orca's are single-handedly going around killing full-grown adult white sharks, which is far from reality. 

This thread's name is also wrong. - In the recent South Africa cases, three of the sharks killed were small JUVENILES, and the other two were just medium-sized white sharks. Not one was fully-grown. Great whites grow very slowly over many decades and reach sexual maturity at around 25 years of age, and they continue to grow in size and mass over the years.

For any lone Orca to go head-on with a huge shark like this is extremely, and I mean extremely dangerous: (Potentially suicide)


*This image is copyright of its original author



*This image is copyright of its original author


I also remember, years ago I read a report of an adult false killer whale that was killed by a Great white shark. I'm gonna try and find that account, and if I do, I'll post it on here.

@Rishi 

Please, can you not edit my posts? I'm just having a friendly discussion and giving my point of view. Thats all. Let people read my analogies and examples and see where I'm coming from.
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United Kingdom Megalodon Offline
Banned
#24

(08-15-2019, 08:47 PM)Spalea Wrote: @Megalodon :

About #19: I don't really imagine how even an extra big 3-tons great white shark could be able to fight an adult 8-tons orca and kill it. Stop fantasizing and let us remain realist !

Or show some proofs confirming your assertions.

Who told you that Orca's weigh 8 tonnes?? Where did you get this from? Male Orca's weigh mostly around 4 - 6 tonnes. And again, not everything is about size and weight. Many cases in nature have proven this a thousand times already. - The tiger's killing prowess being the most perfect example.
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Finland Shadow Offline
Contributor
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#25

(08-15-2019, 08:49 PM)Megalodon Wrote:
(08-15-2019, 11:05 AM)Shadow Wrote:
(08-15-2019, 05:41 AM)Megalodon Wrote: Many people tend to badly overrate the capabilities of Orca's, often ignoring the fact that when Orca's hunt Great White Sharks, they almost always hunt small ones and do so cooperatively, which gives them a huge advantage. It's doubtful if a lone Orca would ever dare to prey on an adult white shark, especially the huge mega-sharks that reach around 18-23 ft and weigh around 2.5 - 3 tonnes.

In a clash, a Great White is yay as capable of destroying an Orca, due to its possibly deadlier weaponry, durability and aggressiveness. An Orca is literally a giant DOLPHIN (Cetacean) which has extremely sensitive skin thats very susceptible to severe damage by the sharks jaws. One clean bite from the white shark, and may be all over for the Orca. The Orca will simply bleed out very quickly, and the shark can even dive down deep and wait for the Orca to bleed out and then finish off the kill.

Lone Orca's always hunt much smaller prey, whereas white sharks will readily kill giant 3-tonne Bull elephant seals and have been observed to hunt giant squids at 4,000 ft depth. An Orca doesn't even compare to these lone predation feats.

To show you what I mean, here's an adult male Orca's jaw gape:


*This image is copyright of its original author


Now imagine that going head-on with this:


*This image is copyright of its original author


The Orca would be in serious trouble if it went head-on as against a Great white. The sharks jaws are massive and devastating and would tear chunks out of the Orcas flesh with ease!

Orca's always hunt white sharks COOPERATIVELY - not single-handedly. Thats a huge difference. If Orca's were solitary predators like the Great white, then there's the Great white shark might just be the undisputed top apex predator of the ocean. Orca's only have the upper-hand over sharks because they run and operate exclusively in packs. Without the pod, I'm sure there would be numerous accounts of white sharks killing Orca's too.

What do you guys think?...

Orca is clearly bigger animal, size matters in wildlife. Also orcas are without a doubt very intelligent. It is quite difficult to see what a great white shark could do really. When we are talking about apex predators of seas, orcas are on the top for many good reasons. I also like sharks, but in time, when learning more about these animals, it became clear to me, that great white shark or any shark aren´t really apex predators, because they are also prey. Orca is only apex predator, when we talk about "big boys". Predator sharks are simply too small. And it seems to be so, that many sharks are quite uncomfortable with dolphins too, even when dolphins are clearly smaller.

Anyway even though, when younger, great white shark was kind of "my hero", I´ve learned to understand, that it can´t do what it wants and it also knows fear, when a bigger predator approaches. Wildlife is merciless and size does matter there.

This is how I see it.

You never acknowledged anything I said. Size does not always matter in nature, there's many factors that can overcome a size advantage. This has been proven over and over again. For example, in Russia, tigers fight, hunt and kill larger Brown bears. If the size theory that your suggesting is true, then tigers would not hunt another larger predator as powerful as a Brown bear. But the reality is that they do, and do so successfully most of the time. Just like how the tiger possesses many physical advantages over larger Brown bears which makes them neutralize the Brown bears size and weight, the white shark also possesses certain physical attributes that can easily help it overcome an Orca in a head-on battle. In fact, in a head-on battle - the shark possesses the more important and vital advantages over an Orca, like teeth, jaws and durability.

Here's the facts that you never acknowledged in my first post:

1) Orca's ALWAYS hunt sharks cooperatively, using strength in numbers. Big advantage!

2) The white sharks teeth and jaws are far more deadlier, perfectly designed to tear off huge chunks off flesh in a single bite - especially from very soft, sensitive skinned Cetaceans. (Orca's, Dolphins)

3) The only reason why Orca's dominate over sharks is due to the clear fact that they run in packs. - There's a very good reason why marine experts refer to the Orca as the "Wolves of the Sea" its because they always hunt cooperatively with their pod. 

And Great whites don't struggle with Dolphins. Who told you that?...White sharks will readily predate on full-grown adult Dolphins, Porpoises and even small whales. Great whites even habitually attack and kill giant Bull elephant seals which can weigh anywhere from 2 - 3 tonnes. As heavy as the shark itself. The largest prey I've ever seen a LONE Orca kill is an adult fur seal. Thats nothing. White sharks, single-handedly, hunt and kill FAR LARGER and more dangerous prey than a lone Orca does. 

I sincerely and very strongly believe that the white shark has gotten very wrong and UNFAIR criticism when pitted against Orca's. Barely no one mentions the fact that Orca's primarily attack the much smaller juvenile sharks, and how they AMBUSH and cooperatively hunt them. Most people act like (I'm not saying you) Orca's are single-handedly going around killing full-grown adult white sharks, which is far from reality. 

This thread's name is also wrong. - In the recent South Africa cases, three of the sharks killed were small JUVENILES, and the other two were just medium-sized white sharks. Not one was fully-grown. Great whites grow very slowly over many decades and reach sexual maturity at around 25 years of age, and they continue to grow in size and mass over the years.

For any lone Orca to go head-on with a huge shark like this is extremely, and I mean extremely dangerous: (Potentially suicide)


*This image is copyright of its original author



*This image is copyright of its original author


I also remember, years ago I read a report of an adult false killer whale that was killed by a Great white shark. I'm gonna try and find that account, and if I do, I'll post it on here.

@Rishi 

Please, can you not edit my posts? I'm just having a friendly discussion and giving my point of view. Thats all. Let people read my analogies and examples and see where I'm coming from.

You asked for opinion and my opinion is, what I wrote. I see this just that simple. Orca is bigger, intelligent and very capable predator. For me that means clear winner. I just don´t see in this anything more. Maybe someone else has more to say :) 

And what ever hypothetical theories there are, reality is what it is, great white sharks are afraid of orcas and flee if noticing one, so what we will see is always orca attacking shark, not vice versa.
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India sanjay Offline
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#26

You are here with one mission.. Great white shark is supreme boss and they can do anything...you are no different than a Lion or a Tiger fan who put all his energy in discussing baseless facts...

WildFact is not for such place...
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Finland Shadow Offline
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#27

(08-15-2019, 08:49 PM)Megalodon Wrote:
(08-15-2019, 11:05 AM)Shadow Wrote:
(08-15-2019, 05:41 AM)Megalodon Wrote: Many people tend to badly overrate the capabilities of Orca's, often ignoring the fact that when Orca's hunt Great White Sharks, they almost always hunt small ones and do so cooperatively, which gives them a huge advantage. It's doubtful if a lone Orca would ever dare to prey on an adult white shark, especially the huge mega-sharks that reach around 18-23 ft and weigh around 2.5 - 3 tonnes.

In a clash, a Great White is yay as capable of destroying an Orca, due to its possibly deadlier weaponry, durability and aggressiveness. An Orca is literally a giant DOLPHIN (Cetacean) which has extremely sensitive skin thats very susceptible to severe damage by the sharks jaws. One clean bite from the white shark, and may be all over for the Orca. The Orca will simply bleed out very quickly, and the shark can even dive down deep and wait for the Orca to bleed out and then finish off the kill.

Lone Orca's always hunt much smaller prey, whereas white sharks will readily kill giant 3-tonne Bull elephant seals and have been observed to hunt giant squids at 4,000 ft depth. An Orca doesn't even compare to these lone predation feats.

To show you what I mean, here's an adult male Orca's jaw gape:


*This image is copyright of its original author


Now imagine that going head-on with this:


*This image is copyright of its original author


The Orca would be in serious trouble if it went head-on as against a Great white. The sharks jaws are massive and devastating and would tear chunks out of the Orcas flesh with ease!

Orca's always hunt white sharks COOPERATIVELY - not single-handedly. Thats a huge difference. If Orca's were solitary predators like the Great white, then there's the Great white shark might just be the undisputed top apex predator of the ocean. Orca's only have the upper-hand over sharks because they run and operate exclusively in packs. Without the pod, I'm sure there would be numerous accounts of white sharks killing Orca's too.

What do you guys think?...

Orca is clearly bigger animal, size matters in wildlife. Also orcas are without a doubt very intelligent. It is quite difficult to see what a great white shark could do really. When we are talking about apex predators of seas, orcas are on the top for many good reasons. I also like sharks, but in time, when learning more about these animals, it became clear to me, that great white shark or any shark aren´t really apex predators, because they are also prey. Orca is only apex predator, when we talk about "big boys". Predator sharks are simply too small. And it seems to be so, that many sharks are quite uncomfortable with dolphins too, even when dolphins are clearly smaller.

Anyway even though, when younger, great white shark was kind of "my hero", I´ve learned to understand, that it can´t do what it wants and it also knows fear, when a bigger predator approaches. Wildlife is merciless and size does matter there.

This is how I see it.

You never acknowledged anything I said. Size does not always matter in nature, there's many factors that can overcome a size advantage. This has been proven over and over again. For example, in Russia, tigers fight, hunt and kill larger Brown bears. If the size theory that your suggesting is true, then tigers would not hunt another larger predator as powerful as a Brown bear. But the reality is that they do, and do so successfully most of the time. Just like how the tiger possesses many physical advantages over larger Brown bears which makes them neutralize the Brown bears size and weight, the white shark also possesses certain physical attributes that can easily help it overcome an Orca in a head-on battle. In fact, in a head-on battle - the shark possesses the more important and vital advantages over an Orca, like teeth, jaws and durability.

Here's the facts that you never acknowledged in my first post:

1) Orca's ALWAYS hunt sharks cooperatively, using strength in numbers. Big advantage!

2) The white sharks teeth and jaws are far more deadlier, perfectly designed to tear off huge chunks off flesh in a single bite - especially from very soft, sensitive skinned Cetaceans. (Orca's, Dolphins)

3) The only reason why Orca's dominate over sharks is due to the clear fact that they run in packs. - There's a very good reason why marine experts refer to the Orca as the "Wolves of the Sea" its because they always hunt cooperatively with their pod. 

And Great whites don't struggle with Dolphins. Who told you that?...White sharks will readily predate on full-grown adult Dolphins, Porpoises and even small whales. Great whites even habitually attack and kill giant Bull elephant seals which can weigh anywhere from 2 - 3 tonnes. As heavy as the shark itself. The largest prey I've ever seen a LONE Orca kill is an adult fur seal. Thats nothing. White sharks, single-handedly, hunt and kill FAR LARGER and more dangerous prey than a lone Orca does. 

I sincerely and very strongly believe that the white shark has gotten very wrong and UNFAIR criticism when pitted against Orca's. Barely no one mentions the fact that Orca's primarily attack the much smaller juvenile sharks, and how they AMBUSH and cooperatively hunt them. Most people act like (I'm not saying you) Orca's are single-handedly going around killing full-grown adult white sharks, which is far from reality. 

This thread's name is also wrong. - In the recent South Africa cases, three of the sharks killed were small JUVENILES, and the other two were just medium-sized white sharks. Not one was fully-grown. Great whites grow very slowly over many decades and reach sexual maturity at around 25 years of age, and they continue to grow in size and mass over the years.

For any lone Orca to go head-on with a huge shark like this is extremely, and I mean extremely dangerous: (Potentially suicide)


*This image is copyright of its original author



*This image is copyright of its original author


I also remember, years ago I read a report of an adult false killer whale that was killed by a Great white shark. I'm gonna try and find that account, and if I do, I'll post it on here.

@Rishi 

Please, can you not edit my posts? I'm just having a friendly discussion and giving my point of view. Thats all. Let people read my analogies and examples and see where I'm coming from.

You for sure like to make a lot of strong statements, which are controversial. It depends a bit about it, that what do you mean. For instance with tigers and brown bears, I have never seen anyone to prove, that tigers would have killed adult male bears. That is naturally totally another topic then again and it has been discussed more than enough. So better to let it be at this point. 

I put this in simple way. You asked for opinion and I gave mine. I don´t find your reasoning convincing what comes to claim, that size wouldn´t matter. Maybe someone else has different opinion.
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United Kingdom Spalea Offline
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#28
( This post was last modified: 08-15-2019, 11:08 PM by Rishi )

@Megalodon I just come to check the orca’s weight: 4-6 tons for the females, 7 tons for males with a maximal weight recorded at 11,3 tons. In your exemple you take a extra 3-tons white shark and I consider only a big 8-tons orcas.

You overstated too the great white shark’s weight...
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Finland Shadow Offline
Contributor
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#29

One article:

https://www.sciencefocus.com/science/head-to-head-orca-vs-great-white-shark/

This is then again that pretty new study which gives quite strong reason to believe, that quite unlikely we ever hear about great white shark, which would challenge orca.

https://www.researchgate.net/publication/332453225_Killer_whales_redistribute_white_shark_foraging_pressure_on_seals

Quote from that:
"Displacement of white sharks and ight response.  Acoustic tag detections documented the abrupt  and consistent flight of white sharks from SEFI in 2009, 2011, and 2013 (Figs3 and SI). In the best-documented  instance, killer whales from two separate pods (oshore and transient ecotypes; Table1) arrived at SEFI on November 2, 2009, when 17 previously tagged white sharks were present. Killer whales were present at SEFI for just over 2.5 hours between 12:48 and 15:30 local time, remained on the western side of SEFI during approach and initiatedthree separate killing bouts on pinnipeds, then departed tothe north. There were no observations of direct predation on white sharks, and all tagged animals were later conrmed alive through acoustic detections; still predations on untagged white sharks could not be ruled out.

Desertion of SEFI by all tagged sharks followed the foraging behavior of killer whales close to SEFI. Regular daily detections of 17 tagged animals at two stationary acoustic receivers moored on eastern and western sides of SEFI (SI) discontinued abruptly following the appearance of killer whales (Fig.3). Overall, the mean number of white sharks detected per day at SEFI declined from a seasonal maximum to zero for the remainder of the season. Declines in detections followed a spatial gradient, immediately subsiding at the western receiver most proximal to killer whale observations, followed by a tapering of detections over the following hours at the eastern receiver (Fig.3). Seven hours and 50 minutes following the event, no tagged sharks remained within receiver range at SEFI and 16 individuals (of 17 displaced tagged sharks) were not detected at SEFI again until the following season (July 2010 or later). One individual returned a week later (November 8), and was detected at SEFI three times over 73 minutes, before departing and being re-detected at Año Nuevo Island (ANI) on November 24."


Then there is this:
"In 1997, an orca was seen ramming into a great white shark off the coast of San Francisco. The force of the blow stunned the shark and gave the orca the opportunity to flip the great white over and hold it in that position."

https://allthatsinteresting.com/killer-whales-eat-sharks

I think, that it is this same case, described here:
"And it's a scene captivating marine researchers around the world -- a 20-foot-long (six metre) female Orca killer whale attacking and feeding on a 10-foot (three metre) Great White shark.

It was captured on video last by wildlife enthusiasts on a cruise sponsored by the Oceanic Society.

Their boat arrived on the scene after taking a radio transmission from a fisherman who'd seen two Orca killer whales near the Farallon Islands, off the coast of San Francisco, California.

It was a female with a smaller whale, perhaps her own offspring, swimming in the area.
Witnesses say the female veered toward a dark shape seen nearby, and then surged to the surface with a Great White shark in her jaws."

Source and video footage from that case:
http://www.aparchive.com/metadata/USA-VIDEO-OF-KILLER-WHALE-ATTACKING-A-GREAT-WHITE-SHARK/83c7bfb0b52b31ea21f22c5f72aac52d

That looks like a case, where female killer whale killed great white shark practically alone, while her offspring was nearby.

I took that case just to show, that also statement, that orca´s hunt sharks only in pods is controversial. Maybe someone knows that case better, I just briefly looked some information.
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( This post was last modified: 08-15-2019, 10:50 PM by chaos Edit Reason: to add )

(08-15-2019, 10:09 PM)Shadow Wrote: One article:

https://www.sciencefocus.com/science/head-to-head-orca-vs-great-white-shark/

This is then again that pretty new study which gives quite strong reason to believe, that quite unlikely we ever hear about great white shark, which would challenge orca.

https://www.researchgate.net/publication/332453225_Killer_whales_redistribute_white_shark_foraging_pressure_on_seals

Quote from that:
"Displacement of white sharks and ight response.  Acoustic tag detections documented the abrupt  and consistent flight of white sharks from SEFI in 2009, 2011, and 2013 (Figs3 and SI). In the best-documented  instance, killer whales from two separate pods (oshore and transient ecotypes; Table1) arrived at SEFI on November 2, 2009, when 17 previously tagged white sharks were present. Killer whales were present at SEFI for just over 2.5 hours between 12:48 and 15:30 local time, remained on the western side of SEFI during approach and initiatedthree separate killing bouts on pinnipeds, then departed tothe north. There were no observations of direct predation on white sharks, and all tagged animals were later conrmed alive through acoustic detections; still predations on untagged white sharks could not be ruled out.

Desertion of SEFI by all tagged sharks followed the foraging behavior of killer whales close to SEFI. Regular daily detections of 17 tagged animals at two stationary acoustic receivers moored on eastern and western sides of SEFI (SI) discontinued abruptly following the appearance of killer whales (Fig.3). Overall, the mean number of white sharks detected per day at SEFI declined from a seasonal maximum to zero for the remainder of the season. Declines in detections followed a spatial gradient, immediately subsiding at the western receiver most proximal to killer whale observations, followed by a tapering of detections over the following hours at the eastern receiver (Fig.3). Seven hours and 50 minutes following the event, no tagged sharks remained within receiver range at SEFI and 16 individuals (of 17 displaced tagged sharks) were not detected at SEFI again until the following season (July 2010 or later). One individual returned a week later (November 8), and was detected at SEFI three times over 73 minutes, before departing and being re-detected at Año Nuevo Island (ANI) on November 24."


Then there is this:
"In 1997, an orca was seen ramming into a great white shark off the coast of San Francisco. The force of the blow stunned the shark and gave the orca the opportunity to flip the great white over and hold it in that position."

https://allthatsinteresting.com/killer-whales-eat-sharks

I think, that it is this same case, described here:
"And it's a scene captivating marine researchers around the world -- a 20-foot-long (six metre) female Orca killer whale attacking and feeding on a 10-foot (three metre) Great White shark.

It was captured on video last by wildlife enthusiasts on a cruise sponsored by the Oceanic Society.

Their boat arrived on the scene after taking a radio transmission from a fisherman who'd seen two Orca killer whales near the Farallon Islands, off the coast of San Francisco, California.

It was a female with a smaller whale, perhaps her own offspring, swimming in the area.
Witnesses say the female veered toward a dark shape seen nearby, and then surged to the surface with a Great White shark in her jaws."

Source and video footage from that case:
http://www.aparchive.com/metadata/USA-VIDEO-OF-KILLER-WHALE-ATTACKING-A-GREAT-WHITE-SHARK/83c7bfb0b52b31ea21f22c5f72aac52d

That looks like a case, where female killer whale killed great white shark practically alone, while her offspring was nearby.

I took that case just to show, that also statement, that orca´s hunt sharks only in pods is controversial. Maybe someone knows that case better, I just briefly looked some information.
Plain and simple, killer whales are in another league. Size, agility and especially intelligence, being the overwhelming factors. They are not called "the wolves of the sea" for nothing.
To avoid the potential Orca vs Shark issue, this will be my only input.
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