The Nautilus Explorer (www.nautilusexplorer.com) visits the remote islands of Guadalupe, San Benitos, Socorro Island, San Benedicto, and the crown jewel of the Revillagigedo Archipelago - Roca Partida. We cage dive with the great white sharks of Guadalupe Island and scuba dive with the giant mantas of Socorro - as well as Socorro's friendly dolphins, tuna, sharks and other large pelagics.