Cayos de San Felipe

Cayos de San Felipe is a national park comprising a chain of small keys (cays) off the southern coast of Pinar del Rio province in western Cuba. Covering roughly 26,250 hectares, of which approximately 2,041 hectares are terrestrial and the remainder marine, the great majority of the park lies beneath the sea. ^[1] Established as a national park in 2002 and managed within Cuba's Sistema Nacional de Areas Protegidas (CNAP/CITMA), it safeguards a largely pristine archipelago noted for its endemic wildlife, including local subspecies of the Cuban rock iguana (Cyclura nubila) on the cays, and the San Felipe hutia (Mesocapromys sanfelipensis), a dwarf hutia now critically endangered and found nowhere else. ^[2] With extensive mangroves, rich fish life and well-preserved reefs, Cayos de San Felipe is one of the most important marine protected areas of Cuba's western Caribbean coast.

Cayos de San Felipe supports a rich insular and marine fauna built around its cays, mangroves and surrounding reefs. The cays host Cuban rock iguanas (Cyclura nubila) in good conservation status, together with endemic reptile subspecies including the Cayo Real anole (Anolis luteogularis sanfelipensis) and a local racerunner (Ameiva auberi sanfelipensis), and endemic bird subspecies such as the Cayo Real vireo (Vireo gundlachii sanfelipensis) and woodpecker (Melanerpes superciliaris sanfelipensis). ^[1] The San Felipe hutia (Mesocapromys sanfelipensis) is a critically endangered dwarf hutia unique to these cays. ^[2] The marine zone is highly productive, with more than 300 varieties of fish documented, sea turtles, manatees and abundant invertebrate life. ^[1] No Cuban crocodile (Crocodylus rhombifer) occurs here, as that species is confined to the Zapata Swamp and the reintroduced population in the Lanier Swamp on Isla de la Juventud. ^[3]

Vegetation on the Cayos de San Felipe is dominated by mangrove, which covers approximately 60 percent of the land surface and includes all four mangrove species reported for Cuba: red mangrove (Rhizophora mangle), black mangrove (Avicennia germinans), white mangrove (Laguncularia racemosa) and buttonwood (Conocarpus erectus). ^[1] Botanical surveys have recorded more than 66 plant species across 35 families across the archipelago. ^[2] Beyond the mangrove, the cays support coastal scrub, sandy-shore vegetation and patches of dry woodland on the higher limestone ground. Offshore, extensive seagrass meadows carpet the shallow marine bottoms, forming a vital habitat that complements the mangroves and reefs and underpins the productivity and nursery function of the surrounding waters.

The Cayos de San Felipe are low limestone keys rising from the broad, shallow marine shelf off southern Pinar del Rio. The cays are built on carbonate platform rock, with surfaces marked by karst features such as the sharp, pitted limestone known locally as diente de perro, and low karst plains fringed by mangrove. Most of the protected area is marine, encompassing shallow lagoons, seagrass flats and coral environments that grade into deeper water at the shelf edge. The combination of emergent karst cays, accreting mangrove shorelines and an extensive seagrass-and-reef seascape gives the park a geomorphology typical of Cuba's southern keys, shaped by carbonate deposition and sea-level history.

Cayos de San Felipe has a tropical maritime climate moderated by the surrounding sea. The wet season runs from about May to October and coincides with the Atlantic hurricane season, when storms can affect the low-lying cays, while the drier season from November to April brings more settled conditions and steady trade winds. Average annual temperature is around 29 degrees Celsius, with annual precipitation of approximately 484 mm and roughly 158 rainless days per year. ^[1] The maritime setting keeps humidity high and buffers temperature extremes, but the exposed, low elevation of the cays makes them vulnerable to storm surge and changing sea levels, factors that shape both the mangroves and the wildlife that depend on them.

The remote keys off southern Pinar del Rio have never supported permanent settlement, their isolation and low relief limiting human presence to passing fishers and, historically, occasional use by those navigating the southern shelf. This lack of development is a principal reason the archipelago has retained such well-preserved mangroves, reefs and endemic wildlife. In modern times the cays have been valued chiefly for fishing and, increasingly, for their scientific and ecotourism interest, prompting Cuba to bring them under formal protection so that their largely pristine ecosystems could be conserved against the pressures affecting more accessible parts of the coast.

Cayos de San Felipe was declared a national park in 2002 and is managed within Cuba's Sistema Nacional de Areas Protegidas under CNAP/CITMA. ^[1] Its designation recognised the exceptional condition of its marine and insular ecosystems and the presence of endemic species, including the Cuban rock iguana, the San Felipe hutia, and several endemic reptile and bird subspecies associated with Cayo Real and other keys. Protection of the largely marine area aimed to conserve seagrass beds, coral environments and fish stocks alongside the mangrove cays, establishing the archipelago as a key marine protected area on Cuba's western Caribbean coast and a focus for research and controlled ecotourism.

The appeal of Cayos de San Felipe lies in its marine and island wilderness rather than land trails. The park is renowned for diving and snorkelling, with more than 20 dive sites among well-preserved corals, sponges and abundant fish, complemented by beaches on some cays. ^[1] Wildlife observation is a highlight, offering chances to see Cuban rock iguanas, sea turtles, manatees and a wealth of seabirds and endemic landbirds. The mangrove channels and seagrass flats invite boat-based exploration and birdwatching. As a remote, conservation-focused archipelago, its attractions are experienced through guided marine excursions, diving trips and nature observation rather than developed visitor circuits.

Access to Cayos de San Felipe is by boat from the southern coast of Pinar del Rio, with the small port of La Coloma, around 25 kilometres away, serving as a typical departure point for the roughly hour-long crossing. The park has minimal built infrastructure, in keeping with its protected, largely marine character, and visits are organised through authorised operators and the area's management under CNAP/CITMA, primarily for diving, snorkelling and nature observation. Travellers should be self-sufficient and prepared for a remote maritime environment, strong sun and limited services. Low-impact, guided marine tourism is the principal way to experience the archipelago while safeguarding its sensitive reefs and cays.

Conservation at Cayos de San Felipe centres on maintaining the integrity of its mangroves, seagrass meadows, coral environments and endemic wildlife across a predominantly marine national park. Managed under CNAP/CITMA, the park works to protect populations of the Cuban rock iguana, the critically endangered San Felipe hutia, sea turtles, manatees and reef fish, and to keep the archipelago's ecosystems in their largely pristine state through regulated fishing, controlled diving tourism and measures such as mooring buoys and coral protection. ^[1] Principal threats include over-fishing, anchor and diver damage to reefs, and the impacts of storms and sea-level rise on the low cays. Sustainable management seeks to balance limited ecotourism and research with strict protection of one of western Cuba's most important marine reserves.