A killer whale is a large toothed whale with distinctive black and white markings and a large fin. Killer whales are marine mammals that exhibit violent behavior that can be recognized when trapped in small pools. Having killer whales in captivity is harmful not only to them but also to killer whale trainers. Killer whales are in danger when in captivity. When kept in their small cages, they have nowhere to go or run and hide when they feel fear or tension. In the wild, they have thousands of miles to travel in case tensions build up with another tribe of orcas (the killer whales). Here's some food for thought: Why should killer whales remain in captivity after hearing about the violence they inflict on each other and innocent humans? In the film "Blackfish", it shows trainers working with the marine mammals, as well as the violence and aggravation in the film. People don't understand that killer whales have to be where they belong, because living in an environment that orcas have no idea about can be dangerous for them. The orcas that live in the...