Isla Mona Facts

Isla Mona is a remote protected island in the Mona Passage between Puerto Rico and the Dominican Republic. It is not a conventional beach destination with hotels, roads and services. The attraction is the reserve itself: a limestone plateau ringed by cliffs, caves, reefs, beaches and unusually well-preserved wildlife habitat.

Isla Mona at a Glance

Status	Reserva Natural Isla de Mona y Monito, administered by Puerto Rico's Department of Natural and Environmental Resources (DRNA).
Permanent population	No ordinary resident population; management personnel and researchers may be present.
Area	About 5,519 hectares, roughly 55 sq km.
Coastline	About 32 km.
Location	In the Mona Passage west of Puerto Rico; approximately 74 km southwest of Mayagüez.
Coordinates	Approximately 18°03–08′ N, 67°51–57′ W.
Landscape	Semi-arid limestone and dolomite plateau, generally around 40–60 m above sea level, with cliffs and extensive cave systems.
Currency / time	U.S. Dollar; Atlantic Standard Time (UTC-4).

Visiting Isla Mona

A DRNA permit is required for visits or camping. The department states that camping permits should be obtained at least five working days before arrival. Official camping is limited to Playa Pájaros and Playa Sardinera. Visitor numbers are controlled and the reserve rules are strict because of the island's sensitive wildlife, archaeological resources and caves.

There is no regular public ferry service comparable with Vieques or Culebra. Visitors normally arrange authorized private boat transport or organized expeditions. The Mona Passage can be rough, so weather and sea conditions are a serious part of trip planning.

Nature and terrain

Mona's isolation has protected a distinctive dry-karst ecosystem. The island is known for caves, coastal cliffs, reefs, sea turtles and endemic or rare wildlife. DRNA information describes dozens of coral species around the reserve. The plateau is exposed and dry compared with much of Puerto Rico, so visitors need to plan for heat, sun and limited fresh water.

Camping rules

Permit	Required in advance from DRNA.
Designated camping	Playa Pájaros and Playa Sardinera only.
Caves	Camping and excursions inside caves are prohibited under the reserve rules.
Cliffs	Climbing and rappelling are prohibited; visitors are instructed to stay away from cliff edges.
Wildlife	Disturbing, capturing, feeding or harming wildlife is prohibited.
Monito	Visits to the small neighbouring island of Monito are prohibited except for authorized researchers.
Supplies	Visitors should assume very limited facilities and must arrange water, food, shelter and return transport appropriately.

Important: Isla Mona is an isolated protected reserve. Permit procedures, transport availability and access conditions can change. Confirm everything directly with DRNA before arranging a boat or paying an operator.

Puerto Rico Facts & Travel Guide | Puerto Rico Maps | DRNA Isla Mona