First of all, it’s against their nature. The most popular captive whale, orcas, would have to swim the circumference of a normal tank in seaworld 1,400 times a day to represent the distance they swim a day in the wild. Also, they don’t have the same life they would have in the wild in a small aquarium. Though some sea parks are saying they are going to build bigger enclosures for the captive whales, that still won't match up to the wild. Overall, captivity is against their nature.
Furthermore, captivity