The dolphin smile is its greatest weakness. One would think that because dolphins are always smiling that they must always be happy. But that isn't the case at all. Almost all dolphins in captivity suffer greatly and long to be free. Only around 53% of dolphins survive being captured and typically die ninty days after being in captivity. A free dolphin can live to be forty-five years old, but captured dolphins are lucky to like for two years and normally never live past five. If a dolphin does however live past five years in captivity, it is likely that they will develop diseases such as pnuemonia, chlorine poisoning, ulcers, ect. Dolphins are also known to go blind due to the chemicals in the pool water.
An easy way to get involved with freeing dolphins is not support dolphin shows of any kind, even if its just to look at dolphins in a tank. No dolphin deserves to be taken from their home and forced into a lifestyle that isn't natural to them.