H2O: Just Add Water, also known as H2O, is an Australian dramatic fantasy television series for children and teenagers created by Jonathan M. Shiff. It first screened on Australia's Network Ten and runs in syndication on channels in over 120 countries and has a worldwide audience of more than 250 million. It was filmed on location at Sea World and other locations on the Gold Coast. The show revolves around three teenage girls facing everyday teen problems with an added twist: they are mermaids with powers over water.