The argument that was that was been touched upon in Blackfish was that if killer whales turn aggressive when been kept for amusement. For example, Tilikum a male orca that was kept being judged for accidents that he was involved in like the one with a former SeaWorld trainer where it’s said that she slipped into the pool and Tilikum drowned her, but other former workers would say it happened because she wasn’t being careful, so it was all her fault not Tilikums. Also, there was another accident that happened with Daniel Dukes he wandered into the pool after hours. The next day a former trainer saw Tilikum swimming with him on his back. After having the autopsy it was proven Tilikum attacked him and after he was dead. So the main argument
