Mark Leiren-Young is a writer, documentary filmmaker, playwright, podcaster and orca activist. His book The Killer Whale Who Changed the World won a Science Writers and Communicators of Canada book award. He wrote, directed and produced the award-winning documentary The Hundred-Year-Old Whale, and his documentary about Moby Doll is being produced by Middle Child Films. Mark hosts Skaana, a podcast about orca and ocean stories, and is actively involved in the fight for the survival of the endangered southern residents. Mark has written for other young audiences for ABC, PBS, YTV, Treehouse and BBC Kids. His books for young readers include Big Whale, Small World, Orcas of the Salish Sea, Octopus Ocean and the City of Victoria Children’s Book Prize winner, Orcas Everywhere. He lives in Victoria, British Columbia.