Orcas should be free

After watching the film Blackfish it was clear that Orcas are very unhappy animals kept in captivity. It could hardly be surprising considering their size and intelligence. Capable of living up to 80 years not one has lived past 30 in captivity which is very telling. They live complex social lives in pods of families with important connections to one another that does not exist when they are kept in small enclosures with other unrelated animals. Aggressive attacks on their trainers are well documented and a clear indication the animal is experiencing great stress in an unnatural environment where they are made to do silly tricks for a paying audience. How can we justify keeping these huge intelligent animals in misery just for human entertainment. It is truly appalling that they are still kept in captivity when we know how miserable they are.