Is there evidence all these creatures dislike captivity and would prefer fending for themselves in the wild? Genuinely curious. Not that it means anything, but dolphins have always seemed happy in captivity so long as they are being cared for appropriately.
Upvoting because legit question offers an opportunity to inform. Most whales have a natural range of thousands of miles over the course of a year. Keeping them in tanks, no matter how generous to our eyes, is the equivalent of keeping a human in a bathroom for their entire life—-with exactly as little stimulation or variety as that implies. Another response observes that whales in captivity always develop at least so…
I think that’s actually a valid argument if you keep something in captivity. When you put humans in jail it’s also better to give them something to do instead of just having them sit around.
Freedom is still the best option though.