2010 : SeaWorld , LLC make their cases before federal appeals panel . Crucially , that judge sided with OSHA 's mandate to keep humans out of the water with killer whales unless there were physical barriers to reduce the risk of serious injury or death . 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 .
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 .