A viral video showed a fake orca attack. It featured a trainer named Jessica Radcliffe. Investigations revealed it was ...

Dubbed the "world's loneliest orca" by animal rights group PETA, Kiska's life had "tragedy after tragedy" after she became MarineLand's last killer whale in 2011.

Kiska's life of continued isolation led the Whale Sanctuary Project to describe her as "the loneliest whale in the world." Both animal rights groups reported that Kiska died of a bacterial infection.

Kiska was dubbed the "world's loneliest" whale. Tara Walton/Toronto Star via Getty Images Kiska, known as the “world’s loneliest” orca, died Friday at Marineland in Ontario, Canada.

"Kiska’s conditions ranged from tiny tanks, to grossly compromised and deteriorating ones," he told The Sun. "In 2012, as a whistleblower of animal cruelty, I revealed water issues at the park.

Kiska is also the site of a deadly World War II battle in which only one side fought. Here's the story. In the early hours of June 7, 1942, 1,200 Japanese soldiers stormed the island.

Kiska, who is around 44 years old now, has lived all but the first couple years of her life in captivity since being captured off the coast of Iceland.