A major tourist attraction of Cayo Largos are the west beaches, Playa Sirena, and Playo Paraiso. These beaches are a kilometre apart, and one may easily walk between them when the tide is not full. Sirena offers full service facilities for tourists. A shuttle "train" service takes tourists from the resorts to these beaches is no longer operating though it had been operating for years (taxis are still available for this purpose). Paraiso offers one of the finest undeveloped beaches in the world. Activities on the beach may be curtailed during turtle egg laying season. The beach has water sports related to the hotels, a restaurant, dolphin attraction, docks for catamaran trips. The lee side of the beach features tidal flats where many very large starfish congregate and other tropical fish are easily viewed.