The world's loneliest killer whale Kiska lived a "tortured existence" in captivity and lost five babies before dying alone, according to outraged animal rights campaigners.
Kiska was just two-years-old when she was captured in the North Atlantic Ocean off the coast of Iceland in 1979.
She was taken to an aquarium in Iceland and lived with four other young orcas - including movie star Keiko who starred in Free Willy.
