Mark Leiren-Young is an award-winning author, screenwriter, playwright and filmmaker. He is the author of three books about whales for children: Orcas Everywhere: The Mystery and History of Killer Whales (which was short-listed for a Red Cedar Book Award and the Information Book Award and won the City of Victoria Children’s Book Prize), Orcas of the Salish Sea and Big Whales, Small World (which were all commended as selections for the 2020 CCBC Best Books for Kids & Teens). He has also written two books about sharks, including Sharks Forever: The Mystery and History of the Planet’s Perfect Predator (which was commended as an Honor Book for the 2023 Green Earth Book Award) and Big Sharks, Small World. He has written TV shows for young viewers for Netflix, CBC, ABC, BBC Kids and PBS. He wrote, directed and produced the award-winning documentary The Hundred-Year-Old Whale. Mark hosts the podcast Skaana, sharing ocean stories, and is actively involved in the fight for the survival of the endangered southern resident orcas. He lives in Saanich, British Columbia.