2010 : SeaWorld , LLC make their cases before federal appeals panel . SeaWorld lets people observe human interaction with killer whales , company says . It has criticized SeaWorld for not providing adequate safety training . In 2010 , Dawn Brancheau was attacked 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 . OSHA has cited SeaWorld for not having adequate safety precautions . In 2010 , Dawn Brancheau was pulled underwater by a killer whale and drowned .