Their fin goes limp & bends to the side when in captivity too long. A Killer Whale can swim as far as 100 miles per day. The pool in the picture of Sea world looks like it's around 50 ft. In the wild, orcas can live to be 60-80 years old. In captivity, they often die before 20.
"When fishermen slit the dolphins' throats" he said softly, "they open their eyes wide and then tears come, and as soon as their throats are slit, they open their eyes and they scream." Read. This bastardry must stop.
Suicide Attempts From intentionally flinging themselves out of their tanks to swallowing inedible stones, many dolphins and orcas have decided a life in a tank is a life not worth living. There have been many records of captive cetacean suicide attempts. If this isn’t an absolutely determinate sign these animals don’t belong in confined spaces, what is?