They're not in captivity. They're all about 150 yards off shore in front my house scaring the shit out of surfers and anyone else who wants to get in the water 
here in FL, a very big shark washed up on the shore. The swimmers worked together to roll him back into the water.
Imagine the irony if the shark ate one of them an hour later. Maddening.
THey're beautiful creatures, sure, I remember them at the Shark Cafe at Sea World, neat-O. But pushing them back into the water where you're swimming? huh?