Mark Leiren-Youngis 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 an 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, Sharks Forever, Octopus Oceanand the City of Victoria Children's Book Prize winner, Orcas Everywhere. He lives in Victoria, British Columbia. Bithi Sutradharis a Bangladeshi illustrator and graphic designer who holds a master of publishing degree from Simon Fraser University, as well as an MFA and BFA in graphic design from the University of Dhaka.

Alongside her professional illustration work, Bithi enjoys sharing her knowledge and skills through teaching. Her contributions have been recognized by educational institutions and government bodies such as the Ministry of Agriculture in Bangladesh. In 2024 Bithi created the illustrations for the first three books in the Take Action series as part of an internship with Orca Book Publishers. Bithi lives in Vancouver and loves exploring the vibrant outdoor scenes in her spare time, finding inspiration in the city's natural beauty.