Coral is a five-year-old girl who is obsessed with swimming, snorkeling and scuba diving. She has long, brown hair. She always wears a pink full-body rubber wetsuit, a pair of light pink swimming goggles, a pair of lilac rubber gloves, a cotton candy pink swimming cap, two magenta ribbons on top of her swimming cap, fuchsia fins, a purple snorkel and a light pink respirator that holds infinite air supplies. Coral lives in a three-story house with lots of swimming pools for different needs. She lives with her mother, her nine-year-old sister Ocean and her three-year-old twin sisters named Marina and Splash.