Ocean Adventures：Call of the Killer Whale (2009)认领

　　"Call of the Killer Whale," a two-hour documentary airing on PBS, begins by focusing on the story of the world's most famous killer whale, Keiko, the star of the film "Free Willy," who was famously set free after being rescued from a Mexican circus. Keiko's story is useful to illustrate the challenges of reintroducing an orca into the wild, having to teach it how to feed off li...