I can't stand zoos. I went to one just once, and I think it was permanently, emotionally scarring. There's one walking distance from where I live, and I've never been there. Just the idea of going to one makes me feel slightly ill, all these years later. My local aquarium doesn't have any orcas, but I think they do have sharks, penguins and seals. I found the Aquarium less nauseating than the zoo, but I haven't been there in 30+ years, either. I think protected national parks are the way to go. I think there could be some value in artificial population control of some animals, but I think people who hunt animals for fun are deranged.