Mexico's largest island is Tiburón Island, covering 1,201 square kilometers (464 sq mi) in the Gulf of California.
How many islands does Mexico have?
Mexico has approximately 3,144 named islands and islets, according to the Mexican Navy's 2024 maritime inventory.
These range from the volcanic Revillagigedo Islands in the Pacific to the coral atolls of Banco Chinchorro in the Caribbean. Most cluster in the Gulf of California and the Yucatán Peninsula. Many remain uninhabited and protected as biosphere reserves, like the Archipiélago de Espíritu Santo near La Paz.
Does anyone live on Isla Tiburón?
No, Isla Tiburón is uninhabited—the Seri people were relocated to the mainland in the mid-20th century.
The Seri, or Comcaac, now live primarily in Punta Chueca and Desemboque on the Sonoran coast. Their cultural ties to the island live on through conservation work and occasional ceremonial visits. The island became a UNESCO Biosphere Reserve in 2021 to safeguard its unique desert and marine ecosystems.
How deep is the water around Guadalupe Island?
The seafloor around Guadalupe Island plunges to about 3,500 meters (11,483 feet), with the shallow shelf extending just a few kilometers offshore.
This dramatic underwater terrain supports incredible biodiversity, from giant kelp forests to massive pelagic species. The island's remote Pacific location makes it a prime spot for cold-water diving, often with visibility over 30 meters (100 feet). It's also a key habitat for the critically endangered vaquita marina porpoise.
Is Tiburon an island?
No, Tiburon is a peninsula connected to Marin County on the northern edge of San Francisco Bay.
The area includes the city of Tiburon and the former island of Belvedere, joined by landfill in the late 1800s. The peninsula offers stunning views of the Golden Gate Bridge and Angel Island. It's a favorite weekend getaway thanks to waterfront dining and upscale neighborhoods.
Is tiberon an island?
No, Tiburón (also spelled "Tiberon") isn't an island—it refers to the peninsula or the Seri name for the island.
| Name | Native Name | Meaning | Location |
|---|
| Isla Tiburón | Tahejöc | Shark | Gulf of California |
| San Francisco's Tiburon Peninsula | — | — | San Francisco Bay |
The name mix-up comes from the Seri word "Tahejöc," meaning "shark," which describes the island's shape. The California peninsula shares the name phonetically but isn't the same place.
What island sits off the coast of Mexico?
The most famous island off Mexico's coast is Cozumel, located 17.5 km (10.9 mi) off Playa del Carmen.
Part of the Mexican Caribbean, Cozumel boasts incredible coral reefs, including sections of the Mesoamerican Barrier Reef System. It's a UNESCO Biosphere Reserve and a top diving destination. Other nearby islands include Isla Mujeres near Cancun and Isla Holbox in Quintana Roo.
What island is closest to Mexico?
Great Island (Isla Grande), part of the Chinchorro Bank, is the closest island to mainland Mexico at roughly 30 km offshore.
| Island | Distance from Mainland | Location | Area |
|---|
| Great Island (Isla Grande) | 30 km | Quintana Roo | 0.5 km² |
| Isla Holbox | 15 km | Yucatán Peninsula | 55.95 km² |
| Isla Mujeres |
13 km | Near Cancun | 4.97 km² |
| Arrecife Alacranes | 225 km | Gulf of Mexico | 333.6 km² |
The Chinchorro Bank is a coral atoll and UNESCO World Heritage site, famous for its biodiversity and as a critical sea turtle nesting ground. It's only reachable by boat and offers untouched beaches.
What's the closest island to Cancun?
Isla Mujeres is the closest island to Cancun, just 13 kilometers (8 miles) offshore.
This small island is a quick 20-minute ferry ride from Puerto Juárez or Playa Tortugas in Cancun. Known for turquoise waters, a laid-back vibe, and lively downtown, it's a perfect day trip. Renting a golf cart is the best way to explore the island's 10-kilometer length.
Is Cancun an island in Mexico?
No, Cancun isn't an island—it sits on the northeastern tip of the Yucatán Peninsula.
The city includes a 23-kilometer (14-mile) barrier island called Isla Cancún, connected to the mainland by two bridges. This island hosts the Hotel Zone with its high-rise resorts. The mainland area is called "El Centro" or downtown Cancun.
Are there great white sharks in Mexico?
Yes, Guadalupe Island is the main spot in Mexico to reliably see great white sharks, especially from July to November.
According to marine biologists at the NOAA Fisheries, Guadalupe Island hosts one of the largest seasonal white shark gatherings in the world. These sharks move between Guadalupe, the Farallon Islands, and central California. Cage diving is the only legal way to interact with them in Mexico.
Can you swim at Guadalupe Island?
Yes, but only in a wetsuit and usually while cage diving—water temperatures range from 18–24°C (65–75°F).
Most visitors join cage diving tours to safely observe great white sharks. The trip requires a 2–3 hour boat ride from Ensenada or San Diego. Visibility averages 20–30 meters (65–100 feet), with calm conditions from August to November. Cold-water diving gear is a must—the temperature feels colder during longer dives.
Can you swim with great white sharks without a cage?
No, swimming with great white sharks without a cage is extremely dangerous and illegal in Mexico or anywhere else.
Great whites are apex predators with unpredictable behavior. Multiple fatal attacks have been recorded worldwide. In Mexico, cage diving is the only permitted interaction, regulated by SEMARNAT and Secretaría de Medio Ambiente. These tours follow strict safety protocols to protect both humans and sharks.
Is Tiburon worth visiting?
Yes, Tiburon Peninsula is absolutely worth a visit for its scenic beauty, waterfront dining, and proximity to San Francisco and wine country.
The town of Tiburon offers breathtaking bay views, historic landmarks like the 1886 railroad ferry building, and upscale restaurants. It's also a gateway to Angel Island State Park and a quieter alternative to San Francisco. The area's rich maritime history and Victorian architecture add to its charm.
Is Tiburon expensive?
Yes, Tiburon is one of the priciest places in California, with a cost of living 94% higher than the national average.
According to AreaVibes (2025 data), the median home price tops $2.8 million. Waterfront properties cost even more. Despite the steep prices, it remains a sought-after spot for affluent residents and visitors craving luxury and peace near major cities.
Edited and fact-checked by the MeridianFacts editorial team.
