Cayo Largo offers some unique water-sport opportunities due to its sea beds, among some of the best protected in the Caribbean, large coral reefs, caves, shipwrecks, a wealth of biodiversity and the nearby keys of Iguana, Cantiles and Rico. Most of the diving sites are at reefs and walls that are from 16 to 98 fet (5 to 30 meters) down—which makes them an excellent scuba-diving destination for both experienced and beginningdivers. This singularly attractive scuba-diving Area—which extends for 30 miles (48 kilometers)—is considered one of the best places for scuba diving in the Caribbean. It is surrounded on aernll sides by coral reefs, which form an impressive habitat for fauna that is both varied and abundant.

Cayo Largo offers some unique water-sport opportunities due to its sea beds, among some of the best protected in the Caribbean, large coral reefs, caves, shipwrecks, a wealth of biodiversity and the nearby keys of Iguana, Cantiles and Rico.

Situated towards the western part of the key, this is the longest beach on Cayo Largo del Sur. Stretching for 7.5 km and surrounded by rocks, giving those who enjoy its choppy, warm waters the impression that they are swimming off a desert island. On more than one occasion it has won the Travellers' Choice award as one of the world's top beaches according to the reviews posted on TripAdvisor, the world's largest travel website.

An ecological centre on the eastern side of the key, dedicated to the protection and breeding of three types of sea turtle: the loggerhead, the hawksbill and the green turtle. Specialists in the field will report on the most important aspects about these animals, contributing in that way to  environmental education. During nesting season, from May to September, it offers evening turtle-watching excursions to several of Cayo Largo’s beaches.