20-Year Prospect
If PETA has anything to say about it, then this job won't exist in twenty years. Will the world band together and collectively decide that zoos, aquariums, and water parks like SeaWorld wrongly enslave animals? And will they then refuse to attend?
Unlikely. Despite a slew of lawsuits and a hard-hitting documentary, attendance has recently risen at SeaWorld.
So long as dolphins continue to draw crowds, the world will need dolphin trainers to train them. Unless we train robots to train them...but then we'll still need robot trainers.