Leon's tank water contains chlorine, which has been shown to cause eye irritation, cataracts and blindness in sea lions. According to former SeaWorld trainers, sea lions like Leon also have to sleep and walk around in their own excrement.
He should live in a 4,000-mile chunk of ocean off the California coast, where he's free to make his yearly northward migration to British Columbia to feed with his wild relatives.
Leon gets bored in his tank. He demonstrates this by expressing abnormal behaviors, also called stereotypic behaviors. These include head bobbing, swaying and chewing on his own flippers.
If he's unlucky, Leon could end up like another SeaWorld sea lion, who was killed in 2010 when an employee forgot to fasten a drain in her tank tightly enough, violating U.S animal welfare regulations.