Killer whales

I think they should be free because they only have a little amount of space to swim and they have to drill a hole in their teeth but in the ocean they, don’t have to get a hole drilled in their teeth. Also in SeaWorld they can get hurt from fighting and since they are in little place the just ram into each other and get hurt, and the killers whales drag the trainers into the water and kill them but sometimes they do tricks with them.