First of all, Peta says that Seaworld doesn’t have big enough tanks.However it meets California's and Florida’s state standards. I have been to Seaworld in Florida and the whales holding cages are plenty big enough, they can do a circle and still have more room. Research says that Seaworld's tanks can hold 3 whales in one cage.
In addition, Seaworld has been known to heal whales. Like I said I have been to Seaworld and have seen a rescue in progress. Studies also show that Seaworld heals the most whales