Saltwater Crocodile-Great White Shark interactions

[TheSmok]

Authors just mean that direct observations of crocodile feeding or predation as well as studies of the stomach contents are unreliable compared to isotope studies which show what prey items is assimilated into crocodile muscles. Observations of rangers and studing of stomach content are reliable, but do not show the real food ecology of crocs (only local cases of feeding).
Water buffalo in Australia as far as I know can reach very large sizes and have a record-sized horns in tip-to-tip dimensions (in fact, buffaloes weighing up to 1200 kg were recorded even for Komodo Island according to Auffenberg, 1981). Also I do not think that buffaloes that have co-evolution with crocodiles are poorly equipped to defend attacks from their natural predator. Domestic cows and horses are easy prey for crocodiles regardless of their size (e.g. 3.5-meter crocs take horse and mortally wounded a cow near rancho and a relatively small croc take a cow much larger than itself), but this is not true in the case with wild water buffaloes (especially large mature bulls) that seem to know about the threat of crocodiles.
As for the buffalo from video "Massive Croc VS 1-Ton Buffalo - EPIC FOOTAGE!", user Venomous Dragon once wrote on old carnivoraforum:

Quote:The uploader in the comments answering the question wheter the buffaloe died: "Sadly, my phone died... as did the buffallo a while later".

I do not think that one account with a young elephant (which was further helped by other elephants, although it really pulled the crocodile) talks about all possible scenarios... The ability of a crocodile to overpower large prey depends on many factors, such as the depth of the water, shape of the shore, soil hardness and the prey body part that was grabbed by crocodile.
There is a detailed discussion of how crocodile(s) managed to kill the adult female rhino in observation by Selous (1908):

Quote:Crocodile attacks rhino.
Wednesday, November 18, 2009
By Frederick Courtenay Selous 
The White House, Washington,
September 27, 1907.
My dear Mr. Selous —
I don’t know whether the enclosed letter and photographs will be of any value to you in your book or not. Both relate to an occurrence so remarkable that I thought I would send them to you.
Fleischmann is a man of good standing, entirely truthful, and he had no conception of the importance of what he was telling me. I told him that the “authorities in Africa” who informed him that the crocodile might have gotten a purchase by wrapping its tail around something sunken were doubtless in error, and advised him to leave it out of the letter which he wrote me, which I told him I was going to send to you. But he put it in, and I am sending it along. It is the only part of his letter, which is mere hearsay or guesswork. I had no conception that crocodiles would tackle a rhinoceros. But you may remember in Samuel Baker’s Wild Beasts and Their Ways that he speaks of seeing crocodiles in Africa with the girth of a hippopotamus. In any event I send you the letter.
The other day, in reading “Big Game” in the Badminton Library, I noticed that Oswell, the South African hunter, speaks of trying to cut off a cheetah, and that the latter distanced his horse with the utmost ease. This tends to confirm me in the opinion that the cheetah for a half mile or so can readily distance a horse, and that when pursued by you the two animals you overtook at first simply tried to keep ahead of you, not trying to exert themselves, and that after a half mile was passed their wind was gone and then they gave out.
When do you think you will publish your book?
Sincerely yours,
Theodore Roosevelt.

Letter from Mr. Fleischmann.
Cincinnati, September 23, 1907.
My dear Mr. President —
I take pleasure in sending you under separate cover to-day, as per your request, the enlarged photographs of the encounter between a rhinoceros and crocodiles in the Tana river, British East Africa ; also another photograph showing a large herd of hippopotami in the Tana river, which I believe may prove of interest to you.
I shall also undertake to give you a brief description of the attack of the crocodile upon the rhino, which resulted in the latter’s death. While encamped on the Thika River, about one hundred yards above its junction with the Tana, the attention of the members of our hunting party was called to the loud cries of the porters. A moment later “AH,” the Somali headman, came running to tell us that a mamba (crocodile) had seized a faro (rhinoceros), as the latter stepped into the river to drink.
“Ali” was concealed in the bushes on the side of the river opposite the scene at the time the rhino came down to drink. When our party arrived, about fifty of our porters were on a sandbank leading out into the Tana River. The rhino was held by its left hind-leg, which had been seized by the crocodile just as the big beast was leaving the river after drinking. At least half a dozen of the porters, who had been lying in the bushes near the scene, in reply to my questions, agreed as to the manner the rhino was attacked.
When we neared the point of attack, the rhino appeared panic-stricken, making very little noise — simply straining and heaving in its efforts to release its leg from the jaws of the crocodile. While making but little headway, the rhino did for a time succeed in holding its own, keeping in shallow water, as the photos 1 and 2 show.
A moment or two later, however, blood appeared on the surface of the water, leading us to believe that the crocodile had been reinforced by other mambas (crocodiles) which had been attracted to the scene by the blood and lashing of the water. The struggle continued on down the stream, the combatants having moved quite a distance from the original point of attack. The rhino still managed to keep on its feet, facing either down stream or toward the opposite bank, and for a distance of at least one hundred yards down stream had made no perceptible loss of ground. Shortly afterward, however, apparently maddened by the pain it was undoubtedly suffering (for now much more blood and pieces of flesh appeared on the surface of the water), the rhino evidently lost its head and attempted to cross through the deep water to the opposite shore, as shown in photo 3.
This move was the beginning of the rhino’s end, for as soon as it turned and met with deeper water, it lost the advantage of a firm foothold in the shallow water, and the animal was quickly drawn beneath the surface.
The rhino was a full-grown female with a horn, which we estimated to be about twenty inches in length. It was the opinion of authorities in Africa to whom I told the story of the struggle, that a very large crocodile had taken hold of the rhino’s leg and wrapped its tail around some sunken obstacle, thus giving it a purchase, as it were, which enabled it to successfully hold on until reinforced by other crocodiles.
These enlarged photographs were made from 3 1/4 x 4 1/2negatives, the “snaps” being taken by my valet, who was acting in charge of the commissary department of the caravan.
I trust that these photos will reach you in good condition.
With my sincere regards, I have the honour to be,
Yours respectfully,
Max C. Fleischmann.

Comment from Selous.
Remarkable and unusual as was the occurrence witnessed by Mr. Fleischmann, there can be no doubt as to the truth of his most interesting story. The three photographs — all of which are reproduced in this book — showing the rhinoceros straining against something which was gradually pulling its hind-quarters deeper and deeper into the water, must convince the most skeptical. I fully agree with President Roosevelt that the theory, that the crocodile held the rhinoceros by getting a purchase with its tail round some sunken log,is not tenable, especially as Mr. Fleischmann states that “the struggle continued on down the stream, the combatants having moved quite a distance from the original point of attack.”
Personally, I find no difficulty in believing that if a very large crocodile were to seize a rhinoceros by the one hind-leg, and was sufficiently powerful to hold that limb off the ground, the largest of these animals would become almost helpless ; for if either hind-leg of a rhinoceros be broken by a bullet, the animal is rendered immediately almost incapable of movement, and very soon assumes a sitting position.
I imagine that a rhinoceros would easily be able to pull the largest of crocodiles out of water, if it was harnessed to one of these reptiles, and so could get a fair pull at it from the chest and shoulders; but I think that the paralysing effect of the crocodile’s hold on one of its hind-legs would be sufficient to account for the helplessness of the animal whose struggles and ultimate death Mr. Fleischmann witnessed in the Tana river.

Returning to elephant seals, they are an important food source for great white sharks during the breeding season, when young animals are very abundant:

*This image is copyright of its original author

Source.
I remember 2 published accounts (one from scientific paper and one from the words of ichthyologist in video) of great white sharks took adult male elephant seals. In one account it may be 18+ ft shark according to very large bite marks:

Quote:The majority of injured seals survived and recuperated rapidly. Infected wounds were rarely observed. Only three elephant seals died on the island or on the mainland following shark injury. In September 1976, an 8,5-mo-old female was found dead with numerous deep lacerations and teeth marks covering her body. In December 1977, a 1-wk-old pup washed up with its entire sacral region amputated just below the umbilicus. In February 1978, a large 7-yr-old male died on the island's main breeding beach from massive shark wounds incurred within the previous 24 h. The most serious wounds consisted of two large oval chunks of flesh missing from the left side of the thoracic region (Fig. 2e). The bites measured 61 and 69 em wide, 61 em high, and 30 cm deep. No bite penetrated the body cavity although some muscle was removed and a rib was partly exposed.

*This image is copyright of its original author

This elephant seal was not actually taken, but at least mortally wounded.
Le Boeuf (1982). 
Unfortunately I do not have access to video with the second account now, but In that case is mentioned a 20-foot shark. The size of elephant seals in both cases is not specified. Reply