Isla Tiburón: The Complete Guide to Visiting Mexico's Largest Island
There are places in Mexico that have been on people's 'someday' list for years and then, when visited, exceed every expectation. Isla Tiburón — Tahejöc in the Seri language — is one of them. Mexico's largest island at 1,200 square kilometers, sitting 20 minutes by panga from the Sonoran coast near Bahía de Kino, remains in a state of near-pristine ecological health because its access has been controlled exclusively by the Comcáac (Seri) people for decades.
To visit Isla Tiburón you need a Seri-issued permit and a Seri guide. There is no other way in. That requirement, which sounds bureaucratic, is what makes the experience extraordinary.
Isla Tiburón is visited from Bahía de Kino. Read our complete Bahía de Kino guide.
Why Isla Tiburón Is Remarkable
The island has no permanent human settlement and no tourist infrastructure. What it has: 1,200 square kilometers of untouched Sonoran desert biodiversity on a scale impossible to find on the mainland. Mule deer that show no fear of humans. Desert bighorn sheep on the volcanic ridges. The Tiburón island fox — an endemic subspecies found nowhere else on Earth. Cardon cacti that dwarf anything on the mainland. And beaches that look as if they were installed yesterday by someone with good taste.
The surrounding waters are among the most productive in the Sea of Cortez — part of the UNESCO-designated Islands and Protected Areas of the Gulf of California. Rays, sea turtles, dolphins, and in winter, cetaceans passing through the Canal del Infiernillo between the island and the coast.
The Seri (Comcáac) People
The Seri are one of Mexico's most singular indigenous groups. Unlike many indigenous peoples displaced from their ancestral territories by colonization, the Comcáac maintained control of their lands and their island. They are people of the sea — for centuries crossing the Canal del Infiernillo, hunting on the island, fishing in the gulf, and living with a relationship to the Sea of Cortez that has no equivalent among any other people in Mexico.
How to Get the Permit
Drive to Punta Chueca, 25 km north of Kino Nuevo on a mostly paved road (the last stretch is dirt). Punta Chueca is a Seri community of approximately 300 people. The permit office is in the community center — anyone in the community will direct you.
The permit fee goes directly to the Seri community. As of 2026, expect to pay approximately $15–25 USD per person. The permit process takes 30–45 minutes and requires your passport or ID. A Seri guide is mandatory — the community assigns one. Guide fees are negotiated separately, typically $50–100 USD for a full-day group.
The panga crossing to the island costs approximately $30–50 USD per person round trip. The crossing takes 15–25 minutes depending on weather.
What to Do on the Island
Wildlife Hiking
The mule deer on Tiburón are the first thing most visitors notice — they are close and unbothered. Bighorn sheep require more effort to find and are rewarding when you do. The guide knows where to look. The island fox is shy and elusive but endemic to Tiburón specifically.
Beach Time
The beaches on the island's western side have the calmest water and fine sand. There are no facilities. Bring everything you need.
Snorkeling
The water around Tiburón is extraordinary — visibility in the dry season can exceed 20 meters. Bring your own gear or ask the guide if equipment is available.
Seri Cultural Sites
The guide can show you historic Seri encampment sites, rock art, and explain the history of a people who resisted forced relocation for centuries and maintained control of their island territory. This context transforms the visit.
Practical Logistics
Start time: aim to reach Punta Chueca by 8–8:30 AM. Permit process, panga loading, and the crossing put you on the island by 9:30–10 AM. A full day on the island — the right amount — means returning by 4–5 PM.
What to Bring
The permit fee and guide fee go directly to a community of fewer than 1,000 people who have maintained this island's ecological integrity for generations. The income from ecotourism is one of the main reasons the island remains in the condition it is in. It is also, independently, the best money you will spend on the trip. The guide shows you things you will not find on your own. .
Frequently Asked Questions
Drive to Punta Chueca (25 km north of Kino Nuevo). Go to the Seri community office and request a permit — bring your passport. The fee is approximately $15–25 USD per person. A Seri guide is mandatory; this can be arranged at the same time.
Yes — mandatory. You cannot visit without a Seri guide. The guide requirement exists to protect the island's ecosystem and to ensure the Comcáac community controls access to their territory. The guide also dramatically improves the experience.
Permit: $15–25 USD per person. Guide: $50–100 USD for a group (full day). Panga round trip: $30–50 USD per person. Total budget: $100–175 USD per person for a full day.
Mule deer (very approachable), desert bighorn sheep (ridge areas, with guide), Tiburón island fox (endemic, shy), cardon cacti, endemic birds, and in the water: rays, sea turtles, and abundant reef fish.
No. The Seri community controls access and requires a permit plus a local guide. This is their legal right and reflects their sovereignty over the island. There is no way to visit without going through the community at Punta Chueca.
