There is no reason in
keeping marine mammals in captivity especially if they’re not
endangered and using them as entertainment. Doing so is, of course, a
perennial source of money for places like Sea World or Chicago’s Shedd
Aquarium. But these animals are intelligent, have evolved to range
widely over the open sea, and are not happy in small tanks where they
sometimes have to do tricks.A common rationale is that “we learn more about these animals by studying them in captivity,” and that will help us save them.