Killer whales exhibit that boredom in a number of ways, some of which we are familiar with, like chewing on the pool surfaces (a favorite of Morgan at Loro Parque) and lying almost motionless on the surface, known as "logging." But Hargrove detailed some others, which are perhaps less well known.
The first: Regurgitation of food. "Many of the whales threw up constantly, which is a byproduct of their boredom," he says. "As soon as we would break from them after feeding they would flip upside down or roll sideways, and puke up all the food. Then play with it, eat it, and puke it up again."
Over the course of his career, Hargrove worked at Seaworld California (1995-2001), Marineland in Antibes, France (2001-2002), and SeaWorld Texas (1993-1995, and 2008-2012). When he worked at SeaWorld California, only one killer whale, Splash (who died in 2005), was a chronic regurgitator. "But in Texas all the whales regurgitated. In France all the whales regurgitated. And I heard that the whales in Florida regurgitated," Hargrove says. "I've seen it as a problem with the vast majority of whales I worked with in captivity. Even whales that were holdouts would eventually learn from another whale."