Hundreds of divers and snorkelers have submerged to listen to a local radio station's four-hour broadcast piped beneath the sea in the Florida Keys National Marine Sanctuary.
Staged Saturday at Looe Key Reef, the Lower Keys Underwater Music Festival features music specially programmed for the underwater listening experience, as well as coral reef conservation announcements.
Songs on the playlist include the theme from the "Little Mermaid," the Beatles' "Yellow Submarine" and Jimmy Buffett's "Fins."
Among participants is Diana Nyad, who in September 2013 became the first person to swim from Cuba to Key West without a shark cage.