Footage of a sea lion 'singing' into a microphone during a performance at Chankanaab National Park in Cozumel, Mexico. <br /><br />The video, filmed on July 1, shows the animal moving its mouth to Crazy by Gnarls Barkley, while its trainer stands to the side. <br /><br />The sea lion even claps its own performance at the end of the show.
