(CNN) – SeaWorld is shutting down all killer whale shows today after a sudden and frightening attack at their park in Orlando.
SeaWorld's star attraction, a killer whale named Tilikum, killed veteran trainer Dawn Brancheau yesterday. Witnesses say the orca actually grabbed Brancheau and pulled her into the water. So what went wrong?
We were joined on Thursday's American Morning by Chuck Tompkins, curator of zoological operations at Sea World in Orlando.
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