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You. thank you. >> thank you. thanks. >> a shocking attack. a killer whale, drowns, mauls its trainer in front of guests. not the first time the killer whale killed somebody. did captivity drive the whale to do this. we have the controversial documentary "black fish" ahead. [ male announcer ] this is claira. to prove to you that aleve is the better choice for her, she's agreed to give it up. that's today? [ male announcer ] we'll be with her all day to see how it goes. [ claira ] after the deliveries, i was okay. now the ciabatta is done and the pain is starting again. more pills? seriously?

More to it than just entertainment. performances educate and inspire. >> people are having less and less daily encounter with animals. so, these are kind of exhibits are teaching people about the wild, if people don't know animals, they won't care about them. >> reporter: unfortunately, opponents say, audiences are not the only ones held captive by the show. sea world wouldn't talk to you. did they give you any reason why? >> no they said they didn't want to do anything seen as promoting a film they think sensationalizes and profits from the death of one of their employees. a lot of their supp...

>> tune in for "black fish" thursday, 9:00 p.m., 8:00 p.m. pacific here on cnn. [ male announcer ] once in a while, everything falls into perfect harmony. [ engine revs ] and you find yourself in exactly the right place at the right time. just be sure you're in the right car when it happens. the 2014 c-class sports sedan. power, performance and style in total alignment. see your authorized mercedes-benz dealer for exceptional offers through mercedes-benz financial services.