Dvd Monster High: Great Scarrier Reef (2016)

When the ghouls decide to explore the school pool, they find themselves transported to a wondrous world of flowers and coral. However, Lagoona doesn't have time to contemplate the ocean floor: she must confront her childhood nemesis, win an aquatic dance competition, and battle a terrifying sea monster. So dive headfirst into this new adventure—you won't believe your eyes.