There are many islands in the waters of Bahía Gigante, there are more islands here than in any other area, and it attracts a large amount of nautical enthusiasts. The largest is the San Lucas, with a surface area of 600 hectares. It is some 4 km to the northeast of Bahía Gigante and 5 km to the west of Puntarenas. Until 1992 there was a prison, the most rigorous of the country, known as the Island of lonely men. It is also located close to the Isla Gitana, on maps they are cited as the Isla Muertos because of the discovery of several indigenous burial grounds. There are 10 hectares that that house a type of rustic tourist complex, with footpaths that lead through the forest, a beautiful beach and a salt water swimming pool. There is a small lodge, offering cabins that cost 50 US$ per person, a capacity of six people. There is a bar restaurant on the beach, and there are also boats and kayaks, snorkeling equipment and windsurfing equipment available for hire.
Islas Guayabo, Negritos and Pájaros Biological Reserves
Isla Guayabo is located approximately 8 Km to the south of Puntarenas in the Golf of Nicoya. The Negritos Island 16.5 Km to the south and Pájaros Island 13 Km to the northeast of Puntarenas. Guayabo and Negritos Islands where established as reserves with the Executive Decree Nº 2858-A on the 28th of February 1973. Pájaros Island was created by means of the Executive Decree Nº 5963-A. on the 28th of April 1976. Guayabo and Negritos Island have an extension of 143.5 hectares and the Pájaros Island has an extension of 4 hectares. The islands are home to abundant populations of sea birds, as well as species of flora typical to the area. Guayabo Island is an important rock that is 50 meters high, covered in some sectors by bushes and small spiny plants. Some species such as the Guaco, higuerón, Coyol palm and Pala Viscoyol are particularly common in this area. On the Islas Negritos, there is semi deciduous vegetation, such as species of white flower, pochote and Indio desnudo. In the fields there are areas of Piñuela casera and Palma viscoyol. In La Isla Pájaros, the vegetation is made up of short standing forest and areas of pasture. The mixed guava, the Guanacaste, the fig tree and the golden spoon bushes are very popular here. The fauna of the islands is mainly made up of seabirds. During some periods of the year migratory birds arrive to look for food and reproduce. The most common species are the frigate birds, the black headed gull, the brown caped gannet and the Pardo pelican. This last species uses the Guayabo Island as a nesting area and it is estimated that there is a population of around 200 to 300 birds. Other species of fauna include the peregrine halcyon, the white tailed dove and the black iguana. There are violin crabs, sea crabs, cambutes, oysters and a large variety of fish.