Visitors watch an orca performance at SeaWorld in San Diego this year. The company has seen attendance slip in the year since the release of a documentary film critical of the company's captive whale program. Mike Blake/Reuters/Landov hide caption

itoggle caption Mike Blake/Reuters/Landov

An image provided by SeaWorld San Diego shows Kasatka in December 2004 with a calf she had given birth to just days before. Mike Aguilera/SeaWorld San Diego/Getty Images hide caption

itoggle caption Mike Aguilera/SeaWorld San Diego/Getty Images