Gracie, A few years ago there was an excellent book called "A Death At Seaworld - Shamu and the Dark Side of Killer Whales". It is about the intelligence of Orcas and how cruel it is to keep them in what is basically a very large, sterile swimming pool. But more than that, it is the story of how these Orcas have caused injuries and deaths to their handlers and how Sea World tries to hide these occurrences not only from the public but also from those that work with the Orcas. The premise of the book is that there is no real research being done anymore on these mammals and the only reason that Sea World keeps them is because they produce revenue for the parks, and to keep that revenue flowing they put people and intelligent, self-aware animals at risk. I have not seen the CNN special, but I can only assume it is the same subject matter.
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