Marilee Menard says `` `` Dolphin Tale '' '' ignores marine parks ' dedication to wildlife research . Marilee Menard says life-saving research could n't happen without these parks . -- There is one essential truth emphasized by every former killer whale trainer who appeared in `` Blackfish , '' a film featured on CNN and recently nominated by the British Academy Film Awards for best documentary : . `` Blackfish '' explores events leading up to killing of SeaWorld trainer Dawn Brancheau . The documentary airs on CNN at 11p.m and 9 . ET summer .
Marilee Menard says `` `` Dolphin Tale '' '' ignores marine parks ' dedication to wildlife research . Marilee Menard says life-saving research could n't happen without these parks . `` Blackfish '' explores events leading up to killing of SeaWorld trainer Dawn Brancheau . The documentary airs on CNN at 11p.m and 9 . ET summer .