In a photo released by SeaWorld San Diego, Kasatka, a killer whale who is approximately 37 years old, swims with her newborn calf in February 2013. Mike Aguilera/SeaWorld San Diego/Getty Images hide caption

itoggle caption Mike Aguilera/SeaWorld San Diego/Getty Images

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