Kaitlin Goddard, left, costumed as superhero, blows through an artist’s flying fish whistle Saturday, July 11, 2015, during the Underwater Music Festival in the Florida Keys National Marine Sanctuary off Big Pine Key, Fla. At right is mermaid Sarah Brunner. The annual event attracted hundreds of divers and snorkelers who listened to a local radio station’s four-hour broadcast piped beneath the sea via underwater speakers, featuring music programmed for the subsea listening experience as well as coral reef conservation messages. FOR EDITORIAL USE ONLY (Bob Care/Florida Keys News Bureau/HO)