PAW Patrol (2013)

S02E31 Pups Save a Mer-Pup

While camping beneath the enchanting Magical Mer Moon, the Pups and Cap'n Turbot experience extraordinary events. Drawn in by the captivating song of a Mer pup, Skye, Zuma, and even the water-resistant Rocky magically turn into Mer pups. They embark on an underwater mission to save a Mer Mom and her pup trapped in a submerged shipwreck. Meanwhile, Ryder and Cap'n Turbot dive down in their Diving Bell to lend a hand in the daring rescue beneath the waves.