SeaWorld answers questions about 'Blackfish ' NEW : SeaWorld , OSHA make their cases before federal appeals panel . SeaWorld lets visitors observe human interaction with killer whales , company says . Comment: In 2010 , Dawn Brancheau was pulled underwater by a killer whale and drowned .
NEW : SeaWorld , OSHA make their cases before federal appeals panel . SeaWorld lets visitors observe human interaction with killer whales , company says . Comment: In 2010 , Dawn Brancheau was pulled underwater by a killer whale and drowned .