In captivity, a killer whale raises its head out of the water at the SeaWorld theme park in Orlando, Fla.
Credit: AP Photo/Phelan M. Ebenhack
Killer whales swimming in the ocean.
In this picture, a 12-foot orphaned killer whale, named A-73 for her birth order in Canada's "A" pod, or family group of orcas, tries to breach the net.
Lolita, a whale at Seaquarium in Miami.
A baby killer whale was born December 21, 2004, at SeaWorld San Diego. Kasatka, a 28-year-old killer whale gave birth at 9:22 a.m. in Shamu Stadium's main show pool following a little more than two hours labor.
Seen in this photo is a family of Orcas: Katina, mother, newborn calf, and five-year-old, Unna (from bottom to top) at SeaWorld in San Diego.
Credit: AP (file)
A well-wisher says goodbye to Keiko, the killer whale who was the star of the film "Free Willy," at his new home in Taknes Bay, Norway, Nov. 7, 2002. Keiko was moved by the Free Willy Keiko Foundation to the remote Taknes Bay.
Local resident Havard Neshaug pets Keiko, the killer whale, who became famous as the star of "Free Willy" movies, in the Skaalvik Fjord, Norway, on Sep. 1, 2002.
Killer whale Kasatka, left, is seen here through the glass with her then nine-day-old calf, Kalia at SeaWorld in San Diego.
Credit: AP/SeaWorld San Diego/HO
A girl presses up against a display tank window to get a closer look as a killer whale passes by at SeaWorld in San Diego.
Four killer whales including Kasatka and her calf Kalia leap out of the water while performing at SeaWorld, in San Diego.
Whales performing at SeaWorld, in San Diego.
Whales in tank at SeaWorld in Orlando, Fla.
SeaWorld trainer Ken Peters is seen here on the job during a killer whale show at Shamu Stadium in San Diego.