My father was pretty conservative Protestant minister with very little disposable income, but family friends and relatives made sure that we got to experience Disneyland, Magic Mountain, and Knott’s Berry Farm (Legoland was decades in the future). We also went to the now long-closed Frontier Village in San José. San Diego Zoo, San Diego Wild Animal Park (renamed San Diego Zoo Safari Park), and Sea World were staples when tourists visited us, so much so that my parents were members of the SD Zoo. ;–)
Back in the ‘60s, they kept ‘Shamu’ in a little pool with just a poor dolphin for companionship. I remember it was an oval, above-ground pool that didn’t seem much larger than some backyard pools to a preteen child. If keeping any Orca captive is immoral, I don’t know what words to use to describe the despicable things they did to both the whale and the dolphin!
They also had a petting pool with dolphins trapped in shallow pools that barely allowed them to get their dorsal fin underwater and nowhere to escape hands touching them!