can hear the ice clanging around and the fishy, soupy water at the bottom. and the handfuls of fish they're getting delivered by the trainer are all getting smaller. so they know they're coming down to the end of session. >> when you see the difference between the beginning of the video and the end of the video, you can see that he's just not quite on his game anymore. >> there's no food left. she kept asking him for more and more behaviors. he wasn't getting reinforced for the behaviors he was doing correctly. he probably was frustrated towards the end. >> then she walked around the perimeter of g-pool. he followed her. and then continued over into the rocky ledge area where she laid down with him to do a relationship session, which is quiet time, basically. >> tilikum at some point grabbed ahold of her left forearm and started to drag her and did a barrel roll and pulled her in.