Marco Polo is a liveaboard operated directly by Sea Bees Diving, running 3-day/2-night, 4-day/4-night and combination 6-day/7-night cruises to the Similan Islands, Koh Bon, Koh Tachai, Richelieu Rock and the Surin Islands in Thailand. Trips are kept small, with a maximum of 12 guests on board, diving some of Thailand's best-known sites for visibility, rock formations and coral gardens.