Favouring the bull shark. Probably is the most impressive sharks pfp, and have been known to attack cetaceans significantly larger than themselves.
The uploader said it was a blacktip shark.
Where does he say that? ilnihoops said it was a bull shark.
Anyways I have other accounts of bull sharks preying on dolphins, crocodiles, etc.
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b]b]The bull shark starts taking large prey at a relatively small size, and it is one of the only sharks that will attack prey larger than itself[/b][/b] (Caldwell, Caldwell & Siebenaler, 1965; Cockcroftet al., 1989; Long & Jones,1996).
Scars and wounds on bottlenose dolphins indicate that bull sharks begin attacking dolphins at a smaller shark size than do white, tiger, or dusky sharks (Cockcroftet al., 1989). Wells (1991) and Irvine, Wells & Gilbert (1973)
have identified the bull shark as a predator of dolphins in the north-east Gulf of Mexico, and bull sharks off South Africa preyed upon bottlenose dolphins more often than did white, tiger or dusky sharks (Cockcroftet al., 1989);
dolphin flukes and vertebrae were found in 2.2% of sharks > 1.8 m long. In an earlier study in South Africa, cetacean remains were found in 12 of 99 (12.1%) bull sharks examined (Bass, D'Aubrey & Kistnasamy, 1973) (Cliff& Dudley, 1991a).
The bull shark may be one of the few predators on some river dolphins as it has been found almost 4000 km from the sea in the Amazon River55Interactions between sharks and dolphins system and in many river systems in northern Australia, North America, Asia and Africa (Last & Stevens, 1994).
The bull shark seems to be a highly adaptable forager, and its diet and interactions with cetaceans may vary considerably among locations.
Among large sharks that are predators of cetaceans, the bull shark is the only that more frequently preys on food larger than itself. Bull sharks start to ingest large food items at relatively smaller sizes than tiger and white sharks (Cockcroft et al., 1989; Long & Jones, 1996; Heithaus, 2001a).
This fact supports the hypothesis that young bull sharks already reported in the Lagamar estuary could be responsible for predation attempts on Guiana dolphins. Additionally, data on the stomach contents of bull sharks collected in the Lagamar estuary showed that the even small specimens with ca. 90 to 120cm in total length had relatively large food items such as other sharks and numerous teleostean fish. This suggests the local estuarine environment represented an important feeding area for bull sharks (Sadowsky, 1971). In Paraná (~25oS) and Santa Catarina (~26oS) coastal waters, stomach content analyses of 11 juvenile tiger sharks with ca. 70 to 195cm in length revealed small teleostean fish, bones and feathers of a brown boobie, Sula leucogaster, cephalopods, crustaceans and polychaetes (Bornatowski et al., 2007).
www.periodicos.ufc.br/index.php/arquivosdecienciadomar/article/view/6032Inspection of the stomach contents of C. leucas indicated the consumption of a wide variety of prey types and an opportunistic often indiscriminate hunting pattern.
While a vast majority of the diet consisted of bony fishes (in particular ariid catfishes), unusual prey including mammals (pig), other elasmobranchs (Pristis microdon) and portions of
freshwater crocodiles (Crocodylus johnstoni) were observed (Fig. 8). Vegetation (aquatic and terrestrial) was also encountered in a high proportion of the stomachs inspected, further reflecting the random nature of prey selection. The authors were also witness to cannibalism by the species whereby C. leucas captured in gill nets were attacked by others. Several C. leucas were also observed leaping approximately 2.5 m clear of the water to take birds perched on overhanging branches in the Fitzroy River, Wester Australia.
zslpublications.onlinelibrary.wiley.com/doi/10.1017/S0952836901000061Anecdotal accounts of aggressive feeding described by traditional owners of the Fitzroy River may also suggest the presence of cooperative hunting behaviours. Of particular interest was an account of an attack on a feral pig that had entered the waters edge to drink. As explained, several small C. leucas attacked the legs of the pig and proceeded to pull it into deeper water. The pig eventually drowned and was consumed. An additional report of an attack by C. leucas on a freshwater crocodile was also collected. A single C. leucas was observed to rapidly disable the crocodile by biting off one of its front legs. Numerous other C. leucas subsequently appeared and proceeded to bite the remaining limbs before attacking the body.
www.biodiversitylibrary.org/part/287439"A 500kg racing horse was dragged underwater by a bull shark while it was swimming in the Brisbane River, its trainer says.
Alan Treadwell said six-year-old gelding Glen-burns Arm was in the river, near Kholo, west of Brisbane earlier this month when the horse "went over backwards and twisted and then all of a sudden he went berserk".
Mr Treadwell, who is based in Grandchester, said he was exercising his star charge on a lead when a shark up to two metres long bit the pacer on the rump.
"I saw this white thing come out of the water when he went over backwards," Mr Treadwell said. "I kept pulling and every time he surfaced I kept dragging him in. I was getting him in slowly and when he could stand he was just trembling and carrying on - he had a white tail when he come out of the water."
The attack comes less than a month after a bull shark bit 18-year-old Nathan Shaxson on the finger and the head near a boat ramp at Karalee - only 15km downstream from the Kholo river site.
Although bull sharks are relatively small - most are between just 1.5 and 2.5 metres - they can cause death by loss of blood from bites or shock.
They are found in most Australian water systems, including Sydney Harbour, the Brisbane River, the Swan River in Perth, Lake Macquarie near Newcastle and the Herbert River in north Queensland.
Mr Treadwell said the attack lasted about 30 seconds, leaving a "jaw mark", puncture wounds and bruising around the horse's leg. "I never thought it'd happen," he said.
"I know there's little sharks there they say, but I thought how big a shark could pull a horse down? He's 500 kilos."
Shark expert Craig Franklin said while it was unknown just how big sharks grew to in the Brisbane River, they could reach as long as 3.5m. He said it was unusual for a bull shark to take on such a large "food item".
"It was probably a mistake," the University of Queensland professor said. "They're opportunistic feeders, they tend to be quite aggressive sharks and it probably got a bit of a surprise to find it was quite a large food item."
Mr Treadwell said his horses would now be trained in a nearby dam. "It's a lot safer," he said.""
Bull shark kills dolphin:
