Nope. NOT Orcas (Killer Whales). They don't dive 2,000 feet, they typically only stay down for about 15 minutes at the most (average dive lasts much less, as in a few minutes to about 10 minutes) before surfacing to breathe, and when they take BIG critters, they have to stun them to kill them, then break them down to eat them, swallowing portions whole. When observed eating Great Whites, they eat them at the surface, and also hunt them in groups.
Therefore, whatever took this Great White was most likely a fish or a cephalopod, NOT an aquatic mammal -- an Orca is a mammal just like thee and me!
