Ric O’Barry was the man who caught and trained the dolphin who starred in the 60s hit TV show Flipper. But when Flipper died in his arms O’Barry had a radical change of heart and embarked on a mission to free all dolphins from captivity. It’s a dangerous mission that takes him to Japan, where he tries to stop an annual slaughter of dolphins. 60 Minutes reporter Liam Bartlett investigates.