Home / Cities in Puerto Rico

Islands, Islests and Cays of Puerto Rico

Puerto Rico is an archipelago formed by the main island and 140 small islands, islets and cays, including Vieques, Culebra, Culebrita, Palomino (known by some by the Spanish Virgin Islands), Mona, and Monito. Some are home to world-famous beaches and wildlife refuges, while others remain remote, uninhabited, and accessible only by private boat.

Puerto Rico's Islands at a Glance

These quick facts offer an overview of Puerto Rico's offshore islands, islets, and cays before you explore the complete list by municipality.

Offshore islands, islets and cays	More than 140
Largest offshore islands	Vieques and Culebra
Best known for snorkeling	Culebrita, Icacos and Palomino
Popular day trips	Icacos, Culebrita and Caja de Muertos
Reached by passenger ferry	Vieques and Culebra
Access to most smaller cays	Private boat, water taxi or guided excursion

Explore Puerto Rico's Islands and Cays

From snorkeling excursions and quiet beaches to wildlife refuges and remote adventures, Puerto Rico's offshore islands offer experiences for many interests.

If you want to...	Visit...
Relax on beautiful beaches	Culebra, Vieques or Culebrita
Snorkel in clear Caribbean waters	Icacos, Palomino or Culebrita
Discover marine life and wildlife	Culebra, Vieques or Mona Island
Take an easy boat excursion	Icacos, Palomino or Gilligan's Island
Combine hiking with coastal scenery	Caja de Muertos or Mona Island
Photograph dramatic landscapes	Mona Island, Culebrita or Caja de Muertos
Escape to a quieter destination	Vieques, Culebrita or Caja de Muertos

Why Visit Puerto Rico's Islands and Cays?

Puerto Rico is more than one island. Its surrounding islands, islets, and cays reveal a remarkable variety of landscapes, from white-sand beaches and coral reefs to mangrove lagoons, limestone cliffs, and remote wildlife refuges.

Some destinations, including Vieques and Culebra, offer communities, accommodations, restaurants, and several days of exploration. Smaller cays such as Icacos and Palomino are ideal for boat excursions, snorkeling, swimming, and relaxing beside clear tropical waters.

Other islands offer a more adventurous experience. Caja de Muertos combines hiking, beaches, and coastal scenery, while Mona Island is known for its dramatic cliffs, caves, wildlife, and remote location. Together, these destinations show why Puerto Rico is best understood as an archipelago rather than simply a single island.

Reasons to explore

• Relax on beaches beyond the main island.
• Snorkel among coral reefs and tropical marine life.
• Discover protected wildlife habitats.
• Take scenic boat and sailing excursions.
• Explore hiking trails, cliffs, caves, and lighthouses.
• Experience the distinct character of Vieques and Culebra.
• Find quieter coastal landscapes away from busy resort areas.

My Favorite Island Experiences

What I love most about Puerto Rico's smaller islands and cays is how different each experience can feel. A short boat ride can take you from a busy coastal town to clear water, quiet beaches, and a landscape that feels completely removed from everyday life.

Vieques and Culebra each have their own identity and deserve more than a hurried visit. Their beaches, wildlife, and relaxed pace offer a very different experience from the main island. Smaller destinations such as Culebrita, Icacos, and Caja de Muertos provide memorable day trips where the journey across the water becomes part of the adventure.

Growing up in Puerto Rico, it was easy to think of the island as one place. Over time, I came to appreciate that Puerto Rico is truly an archipelago, with each island and cay adding another layer to its natural beauty and cultural story.

Puerto Rico's Major Islands

Beyond the main island, Puerto Rico's archipelago includes inhabited islands, remote wildlife refuges, and smaller cays scattered across the Atlantic Ocean, Caribbean Sea, and Mona Passage. From the beaches of Vieques and Culebra to the limestone cliffs of Mona and the historic lighthouse on Caja de Muertos, each island offers a glimpse into Puerto Rico's diverse geography, natural ecosystems, and maritime heritage.

The following table highlights some of Puerto Rico's most notable offshore islands and cays.

Island	Location	What Makes It Notable
Vieques	East	Beaches, wildlife refuge, Mosquito Bay
Culebra	East	Flamenco Beach, coral reefs, snorkeling
Mona	West	Limestone cliffs, caves, endemic wildlife
Desecheo	West	Protected wildlife refuge
Caja de Muertos	South	Historic lighthouse, coastal ecosystems
Culebrita	East	Beaches, historic lighthouse
Icacos	East	Snorkeling and boating
Palomino	East	Beaches and recreational activities
Cayo Luis Peña	East	Protected coastal habitats and reefs

Browse islands by: Region · Municipality

Explore Puerto Rico's Islands by Coastal Region

Browse Islands, Islets and Cays by Municipality

Puerto Rico's smaller islands and cays are associated with municipalities throughout the archipelago. While some are accessible by ferry or guided excursions, others are protected nature reserves that require special access or permits. Explore the directory below to discover their names, locations, and geographic connections to the main island.

Local Tips

Confirm how to get there
Vieques and Culebra are served by passenger ferries and flights, while most smaller cays require a water taxi, private charter, or organized boat excursion.

Reserve transportation early
Ferry tickets, flights, and popular excursions can sell out, especially on weekends, holidays, and during the winter travel season.

Check marine conditions
Wind, waves, rain, and currents can affect ferry schedules and boat tours. Confirm conditions with the operator before leaving.

Ask what the excursion includes
Some tours provide snorkeling equipment, flotation devices, food, drinks, or beach chairs, while others provide transportation only.

Bring sun protection
Shade can be limited on small cays. Pack reef-conscious sunscreen, a hat, sunglasses, protective clothing, and plenty of water.

Carry out everything you bring
Many smaller islands do not have trash collection, restrooms, shops, or other visitor services. Help protect them by leaving no waste behind.

Respect protected areas
Some islands are wildlife refuges or nesting areas with restricted access. Follow signs, stay within approved areas, and never disturb nests or animals.

Do not touch coral or marine life
Avoid standing on coral reefs, collecting shells, feeding fish, or approaching sea turtles and other wildlife too closely.

Bring cash and essential supplies
Small operators and remote locations may not accept cards or offer food, water, medicine, or other necessities.

Plan for the return trip
Confirm your pickup location and departure time before exploring. Ferry passengers should return to the terminal early, particularly during busy travel periods.

Frequently Asked Questions About Puerto Rico's Islands and Cays

Explore answers to common questions about Puerto Rico's archipelago, including its offshore islands, smaller cays, natural reserves, and the Spanish Virgin Islands.

Is Puerto Rico an island or an archipelago?

Puerto Rico is both an island and an archipelago. While the main island is the largest and most populated, the archipelago also includes Vieques, Culebra, Mona, Desecheo, Caja de Muertos, and numerous smaller islands, islets, and cays scattered across the surrounding waters.

---

What are the main islands of Puerto Rico?

The three largest islands in the Puerto Rican archipelago are Puerto Rico, Vieques, and Mona. Culebra is another significant island and, together with Vieques, forms one of Puerto Rico's two offshore island municipalities. Other notable islands include Desecheo, Caja de Muertos, and Culebrita.

---

What are the Spanish Virgin Islands?

The Spanish Virgin Islands, also known as the Puerto Rican Virgin Islands, are a group of islands east of mainland Puerto Rico. They consist primarily of Vieques and Culebra, along with surrounding smaller islands and cays, including Culebrita and Cayo Luis Peña. Although geographically associated with the Virgin Islands, they are part of Puerto Rico.

---

What is the difference between an island, an islet, and a cay?

An island is a naturally formed area of land surrounded by water. An islet is a relatively small island, often rocky or uninhabited. A cay is typically a small, low-lying island formed from sand or coral material, often associated with reefs. Puerto Rico's coastline features all three types of landforms.

---

Which islands of Puerto Rico are inhabited?

Beyond the main island of Puerto Rico, Vieques and Culebra are the two inhabited island municipalities. They have established communities, local governments, and transportation connections to mainland Puerto Rico. Most of the smaller offshore islands and cays are uninhabited.

---

Can you visit Puerto Rico's offshore islands and cays?

Many offshore islands and cays can be visited by ferry, boat excursion, or private vessel. Vieques and Culebra have regular transportation connections, while destinations such as Icacos and Culebrita are commonly reached by boat. Other islands are protected natural areas with restricted access, and some are closed to the public. Always verify current access rules before planning a visit.

---

Which Puerto Rican islands are best for snorkeling?

Culebra, Culebrita, Icacos, and Cayo Luis Peña are among Puerto Rico's well-known snorkeling destinations. Their surrounding waters contain coral reefs, seagrass habitats, and diverse marine life. Conditions vary by season, weather, and sea conditions, so visitors should choose locations appropriate for their experience level.

---

Where is Mona Island, and can tourists visit it?

Mona Island lies in the Mona Passage, approximately 46 miles (74 kilometers) west of mainland Puerto Rico. Known for its limestone cliffs, caves, and unique wildlife, the island is a protected natural reserve. Visits are regulated and require authorization from Puerto Rico's Department of Natural and Environmental Resources.

---

Why are Puerto Rico's smaller islands and cays important?

Puerto Rico's smaller islands and cays support important coastal and marine ecosystems, including coral reefs, mangroves, seagrass beds, and seabird nesting habitats. Many also preserve archaeological sites, historic lighthouses, and evidence of Puerto Rico's maritime history. Protected areas help conserve these natural and cultural resources for future generations.

---

Continue Exploring Puerto Rico

---