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Orca - Killer whale
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 (08-18-2020, 10:26 AM)Spalea Wrote: Pablo Cersosimo: " Orca hunting behavior may look cruel but there is a lot of social interaction between the pod members and teaching for the youngest orcas. " These awesome creatures inspired me to write a business article based on their hunting technique and habits. 
Meet "Lonesome George"; Possibly the Largest Killer whale alive! (He has been estimated at 33ft; the People That have seen him in real life describe him to be gigantic):
 *This image is copyright of its original author  *This image is copyright of its original author  pablocersosimo This was the biggest orca I ever photographed and probably the most filmed one. Mel was massive, clever, smart and an outstanding hunter. The only orca hunting 2 sea lions at the same time (image #3).  
Wow, I did not know there is a thread about killer whales here. Luna was the one who led me to the wildlife world.
"An interviewee from Repulse Bay indicated that killer whales normally do not go after tusked narwhal, and another indicated that narwhal with tusks are never found floating dead. A Pond Inlet interviewee had observed killer whales going after female narwhal, but not males. He recounted a story that tusked narwhal had killed killer whales in the past; the narwhal pierced the killer whale with its tusk, and become stuck, with both animals dying as a result. Tusked narwhal may therefore represent a danger to killer whales; however, a Pangnirtung interviewee stated that they will attack narwhal with and without tusks, and two interviewees had observed killer whales kill tusked narwhal. An Arctic Bay hunter found a dead tusked narwhal covered with killer whale bite marks."
... "However, there is disagreement among opinions and/or observations of different behavior. Several Repulse Bay interviewees suggested that killer whale do not normally attack tusked narwhal and that only females are found dead. The same information has been reported previously [26], possibly from the same local experts. These observations are contrasted by those of other interviewees who indicate that tusked narwhal are killed on occasion. In northwest Greenland (Avanersuaq District), hunters have also observed killer whales attacking and killing both male and female narwhal [45]. A Pond Inlet interviewee reported a story of a narwhal piercing a killer whale with its tusk, suggesting that male narwhal are dangerous to attack. Rosing [77] described an observation from Greenland in December 1924 where killer whales were observed killing narwhal and one was seen jumping out of the water with a narwhal stuck to its side, with its tusk penetrating to the root straight through the killer whale. During interviews for the Igloolik Oral History project [78], an elder provided a story [79] of a dead killer whale that was found in the waters of qaqqalik (possibly near Kimmirut) that had a narwhal tusk pierced through its mouth." https://carnivora.net/walrus-v-narwhal-t4357-s15.html#p223061 This is an article I have never seen before. Polar bears are known to kill narwhales, therefore, this arcticle saying a narwhale as a dangerous opponent is shocking.  (07-28-2022, 01:32 AM)Pckts Wrote: Orcas feeding on a good sized Great White. That's not a good-sized great white shark. That's only a 9 ft juvenile shark. Orca's primarily target the juveniles, and sometimes subadult great white sharks.
Transient Orca Hunts Alone.
 *This image is copyright of its original author On Tuesday, April 19, we were lucky enough to get another sunny day in April. The past few days were full with whales and I was wondering what new surprises were in store for us today. Captain Mike and I headed north with our wonderful crew in search of Transient Orcas. In all the world there are 10 (maybe 11) ‘ecotypes’ of orca. These ecotypes are the same species but as far as we know their social, vocalization, and dietary differences keep them genetically distinct from each other. The Transient ecotype (also known as Bigg’s) travel in small family groups that tend to be more fluid than the more famous Southern Resident Orcas and their pods. These Transients also only feed on marine mammals, with 70% of their diet consisting of Harbor Seals. We headed north to look at all the great Seal and Sea Lion spots, because you usually expect the predator to be where the food is, right? We went to rock after small island and had a great time watching the playful seal pups at some places and the gigantic Steller’s Sea Lions wrestle at other. Both of these animals are food sources for the Transients, but so far no luck yet. The Transient orcas are a little harder to spot since they, stay under longer and tend to zig-zag under the surface. This is due to their unique hunting style. While other orca ecotypes rely mostly on their echolocation abilities to find their prey, these mammal eaters are silent hunters. Everything they do is about stealth since they are hunting other intelligent mammals. So while under water they are visually scanning, looking everywhere for their food, and when they surface they make as little noise as possible.  *This image is copyright of its original author We were about to lose hope on our hunt when a male Transient Orca was spotted! We soon were with this huge, adult male, that seemed to be traveling and hunting alone. This is very interesting since orcas are social animals and almost always travel in groups, but adult males, especially if their mothers are no longer around, do sometimes strike out on their own and sometimes join with other families for a while or pair up with other lone males. This, though, was the first time I had ever seen an orca alone. We identified him as Transient orca T049C. He usually is traveling with his family, the T49B’s, and I saw him with them a few weeks ago, but today I guess he wanted some alone time. We got some amazing views of this guy gliding through the water in search of his prey. He fooled us a few times by diving on one side and surfacing on the other, and to top it all off he swam between us and Mt. Baker, big and snow-capped, in the background. What another San Juanderful day. Whale folks, until next time. Naturalist Erick M/V Sea Lion seattleorcawhalewatching.com https://seattleorcawhalewatching.com/transient-orca-hunts-alone/ If anyone could find an interaction between transcient orcas and great white sharks. That would be interesting. Orca pods are led by a female matriarch just like an elephant herd is: Code: After observing 102 killer whales in the wild, British researchers have determined that female killer whales become key leaders in their pods only after they age out of fertility, according to a study published in Current Biology on Thursday.More can be read in the link above. 
I would like that this debate to be over,settle the rest via private messages.
APEX AND VIDA
In order to get to a debate, good information, overview, true interaction and respect are needed. Not easy at the best of times. Today, debatingwise, we're rapidly going downhill just about everywhere. In order to prevent problems over here, we decided for a few rules. Every member has to respect them. I read a few posts. What did I see? I saw selection, a lack of overview, a lack of respect and, as a result, a total mess. APEX I know you like to go for it, but in order to get to a bit of overview, you need both eyes. If you cover one, the result will be distortion. If you want to debate, you also need consistency. Example. Professionals (most biologists) never found evidence of an adult male brown bear killed by an adult male Amur tiger. That is to say the evidence found didn't meet the(ir) threshold. Amateurs (like members of a forum), however, got to a different conclusion (referring to incidents described by rangers, hunters, naturalists and biologists). In your posts in the tiger extinction thread, you decided to join the amateurs. For good reasons, of course. Professionals also never found evidence of adult male brown bears displacing adult male Amur tigers. Amateurs, however, did. This time, you decided to join the professionals. Again for good reasons, but one could conclude your stand is inconsistent and be close. When you join a debate, both eyes and consistency are needed. That and an open mind. The reason is reality often is much more interesting than preference and all the rest of it. Life is very complex. Mammals, furthermore, are able to change their behaviour over time. You just never know. Interactions between tigers and brown bears in the Russian Far East are interesting. Interesting enough for a debate on a forum? The answer is yes. The problem is it takes two to tango. If one of the two isn't interested in information you consider as reliable, it's game over. Accepting that part of interaction, as you know, beats using a heavy tank to force a decision. The advice is to sell the tank and to approach problems in a different way from now on. There are different ways to get to Rome. Remember it always is about good information in the end. What our readers and members think, is up to them. They can discuss the information you post elsewhere. You most probably noticed quite a few members of forums are prepared to ignore, dismiss or twist reliable information about reality if it doesn't suit their agenda. This is humans for you. Let it go and focus on facts. This forum is about the natural world, not something else. Over 50 million views say this policy is appreciated. If you find something of interest, you can post it in the tiger extinction and the Amur tiger thread. Both threads have a lot of views. My advice is to use the opportunity offered and to stay away from 'debates'. VIDA In contrast to what you seem to think, you're, preferencewise, not different from others interested in a specific animal. A major difference (referring to post 69 in particular), however, is you're prepared to use both insult and manipulation. Example. In the last paragraph of post 69, after offering a lot of praise first, you appealed to a few mods and one of the co-owners. The other co-owner (the one who invited 'Apex' to post in the tiger extinction thread) wasn't mentioned. A deliberate attempt to create tension between both co-owners and the mods in order to get it your way? The answer is in your PM to our mod Lycaon: you will remove the insults and the attempts to manipulate when we give in (and ban Apex). This means it was a result of a deliberate decision. More than enough to qualify for a permanent ban, but that's apart from Grizzly. He made you feel welcome and twice raised your reputation. You used it to manipulate him. I respect Grizzly, meaning you can stay. From now on, however, we'll watch you closely. Next time you decide to manipulate or insult a mod or member, it's game over. CONCLUSIONS The debate has been concluded. All posts up to post 69 will remain. The others, apart from this one, will be deleted. Lycaon will close the thread for a week. Apex takes a break of a week in order to visit his grandmother. Vida takes a break of 2 weeks in order to answer the question why he decided to manipulate a mod who supported him and raised his reputation. All mods will watch Vida when he returns. RESPONSES TO THIS POST Will be deleted.
Thread is open again,vida can return in a few months as long as he stays out of trouble.
Hello everyone,
Here goes the catalogue of the orcas from the Iberian Peninsula made by Proyecto orca https://www.proyectoorcacadiz.com/pt/_files/ugd/ed7c60_86a313e403c245e28b4f6c4ad917ac6e.pdf Hope you find it useful for this thread |
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