"Based on the teleplay "Aqua Pups save a merdinger" by Jeffrey Duteil."
Summary
"Are you ready for an underwater adventure in Puplantis with Chase, Marshall, Skye, and the rest of the PAW Patrol? When Mayor Humdinger causes deep-sea chaos it's up to the heroic pups and their new friend, a merpup named Coral, to save the day"-- Provided by publisher.