I have many convincing reasons to support my opinion. Captivity causes many health problems in marine mammals. Many tanks have water full of chemicals and bacteria; this results in blindness and many skin problems in dolphins and other marine mammals. Marine mammals in captivity die from pneumonia, ulcers and other stress related diseases. Most of these helpless creatures suffer form boredom. Dolphins in the wild can swim from 40-100 miles per day but in pools they go around swimming in repetitive patterns. Due to boredom and limited space many dolphins abuse themselves; they often bang their heads against tank and aquarium walls. Some of these poor innocent creatures face abusive treatment by their caretakers, thus shortening their lifespan. In fact Keiko, the killer whale, the star of Free Willy, was a victim of this type of abuse. It was known to be said that he was 1000 pounds underweight and developed a wart like disease. His teeth were ground down from chewing the sides of the pool due to the boredom and he had a problem with his dorsal fin. Marine mammals breed very poorly in captivity with very high infant death rates. For this reason, when a baby dolphin is born into captivity its birth is usually kept a secret from its mother until it shows signs of survival. Marine mammals do breed in captivity, but the birth rate in captivity is not as successful as in the wild.
Many people think that marine mammals should remain in captivity. I realize that some people may believe that captivity increases the life span of certain animals, but the truth is if these creatures are so happy in captivity, why do they die so fast? Captivity shortens animal life spans, not increases them. Wild dolphins can live 40 years in