H2O: Just Add Water - The Complete Season 3 [4 Discs]

"As Cleo and Rikki prepare to take on their last year of high school without Emma, who is busy overseas, they're confident that with Lewis' help they have what it takes to thrive on Mako Island. However, when water attacks them during a full moon, they realize there's more to the mysterious island than they bargained for. Luckily, another mermaid named Bella is able to help them discover the key to protecting the island."