Celebrating the Majesty of Sharks.

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Often when sharks and indeed orca predate on sharks, they will target the liver[with sharks more liver oil=bigger liver=greater buoyancy=bigger size]. There has been some study into infrequent attacks by orca on white sharks off the Farallons and the resulting mayhem caused amongst the local shark population. Footage shot by tourists on wildlife cruises led researchers to suggest that the orca were aware of tonic immobility in sharks and that they grasped the animal just behind the head and held it upside down at the surface. Bear in mind that individual pods of orca develop unique hunting techniques related to their local prey, this information being passed down the generation. The orca at the Farallons may hunt whites in this way, but the orca in Australian waters may not.
I would guess that this photograph is of a younger shark which has been attacked by a larger shark. The young age may explain why the pectoral fin appears outsized, and certainly young sharks are predated by the bigger ones. The step on the transom, the rope and the water splashes all give hints to the size of the animal, but nothing definitive.
It is an interesting photograph, but it is a pity that it was sensationalised, rather than an opportunity to learn and share more about the complex lives of these animals.
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