Just a disclaimer that I'm not directly attacking you as this is more a rant if anything since you mentioned animal rights.
Okay, this is what I really don't like. I absolutely hate it when people say, "Animals don't deserve the same rights we do," as if the intelligent ones (cetaceans are among the top) don't constitute as people because they are not human.
I used to have a friend who proclaimed he LOVED animals and when I told him about how people are petitioning for a Cetacean Bill of Rights and to recognize cetacean personhood, he basically said, "THEY'RE NOT PEOPLE, THEY DON'T DESERVE IT," when they're just as if not more intelligent than we are. If they don't equate to the status of people by not being human, what does that say about intelligent life forms on other planets?
Although in correlation to your post about Seaworld, like Koko said, they keep their orcas (and their dolphins too though their dolphins have a smaller chance of going insane) in small enclosed spaces, never being able to socialize with others like them unless they're performing or being forced to breed. They're fed fish with little nutrients compared to the diets of wild orcas (which consist of not only fish but other marine mammals) and they're basically stuck in a bathtub for their entire lives and they go mentally unstable. Not to mention these orcas suffer from dorsal fin collapse which doesn't help their condition. They are basically money making machines for Seaworld so I don't understand how you don't see it as enslavement where they're forced to perform all the time at the amusement of others?