Merman In The Water - Larry Stylinson AU Merman!Louis

When Harry Styles goes to his uncle's in Florida for the summer, he's reminded by the company his two dating friends, Liam and Zayn, how hopelessly single he is. The trip he expected to be fun turns slightly sour on his first day there. Until he meets Louis Tomlinson, that is. And even though Louis is more different than Harry could imagine, Harry slowly begins to feel like Louis could very well make his seemingly lonely trip the best vacation of his life.