'Blackfish' doc looks at SeaWorld's captive whales

wochit entertainment
July 24, 2013 AT 10:32 AM
What the Oscar-winning 2009 documentary "The Cove" did for dolphin slaughter in Japan, "Blackfish" may do for killer whales living in captivity while performing at marine parks. The documentary "Blackfish," explores what may have caused Tilikum, a 12,000-pound orca, to kill three people, including veteran SeaWorld trainer Dawn Brancheau in 2010.