The Caribbean manatee, a subspecies of the West Indian manatee, inhabits coastal tropical waters of Latin America and the Caribbean. Habitat use is poorly studied in most of this range, including the Cuban archipelago, which contains the largest coastal habitat in the Caribbean. Our study is based in the Isla de La Juventud, south of the the main island of Cuba. Since manatees in this area live in dark water with poor visibility, we are using side-scan sonar to characterize the habitat.