SeaWorld Parks & Entertainment owns a chain of parks on the theme of animals, oceanariums and marine mammals. Special entertaining shows with animals like dolphin, sea lion and captive orca constitute major attraction of the theme park. There are other zoological displays including other species of marine creatures also. They operate in the regions of San Diego, Florida, Orlando, Texas and San Antonio. In 2008, they even announced to include a water park of Aquatica. George Millay, David Demott, Ken Norris and Milton C. Shedd share the credit to bring the theme park into life. There are various joyrides including Manta and Kraken roller coaster ones. Originally, Busch Entertainment Corp owned them. However, in 2009, they were renamed as SeaWorld Parks & Entertainment after Blackstone Group acquired them.