I dunno??? Something called a "Killer Whale" seems to be something not to be trifled with. It is a large brained, thinking, hunting, killing, pack mammal. It is capable of forethought & afterthought. (Obviously not Republicans...)
For some reason we land lubber monkeys feel we must "save" them, "train" them & "tame" them. Like all of the endangered species, we endangered. There really isn't much we can do for any of them. Sure we'll save a few, it's just our own nature is far too destructive, until proven otherwise.
Alas, the animal world needn't fear... Ma Nature will figure a way to best us; be it animal, parasite or asteroid. She'll snuff every last one of us out. With pleasure.
I guess sometimes the other mammals on this planet just lose their patience with her... and kill a "trainer" at a sea park... for a third time... in front of hundreds.
Playing with large animals, especially intelligent ones, is like playing Russian Roulette with a semi-automatic pistol. Stupid, stupid monkeys.