The Bay Islands of Roatan, Utila, Guanaja and Cayos Cochinos lie off the Honduras mainland and along the world’s second largest barrier reef. Roatan is home to one of the Caribbean’s largest wrecks, the 300’ freighter, the Odyssey. Whalesharks, manta rays and dolphins are more commonly encountered in Utila’s waters where the continental shelf drops vertically to over 3,300 feet.