In this fascinating documentary, filmmaker Louie Psihoyos and former dolphin trainer Richard O'Barry examine the abuse of dolphins by fishermen in the Japanese coastal town of Taiji. In the 1960s, O'Barry captured the dolphins that were used in the popular television series "Flipper" and taught them the tricks that made the show a hit. Four decades later, O'Barry has renounced his work as a trainer and dedicated his life to exposing the slaughter of dolphins.