After my post about Blackfish, the new documentary about Tilikum I went to the film’s website where they had posted a response from SeaWorld. SeaWorld says that it is not stocking their parks with orcas captured from the wild. Not in more than 35 years. (This is why they masturbate Tilikum.)
Apparently the response does not include any ideas as to why captive male orca suffer from dorsal fin collapse. Knowing that the rate of dorsal fin collapse in the wild is very low (1%) and the rate of dorsal fin collapse in captivity is high (most/all male orcas) was disturbing information to me.
Blackfish Official Film Site: SeaWorld responds
And the trailer: