Safety · Destination Guide
Mahahual / Banco Chinchorro
Gateway to Mexico's wild offshore atoll and the healthiest reefs in the Caribbean Mexico
Updated Oct 30, 2025 • 23 sources
Safety And Conservation
Follow protected-area rules to keep reefs healthy. Offshore days involve long rides, sun exposure, and changing winds; conservative dive planning and signaling gear are essential.
Top Risks
- Primary risk: Crocodile Restrictions
- Secondary risk: Nortes and Port Closures
- Emergency contact: CONANP - Banco Chinchorro Reserve (+52-983-285-4623)
- Safety overview: Follow protectedarea rules to keep reefs healthy.
Dive safety
- Carry an SMB and whistle on all boat dives.
- Hydrate and protect from sun on 60 km round-trip boat days.
- Heed captain calls on nortes; never pressure crews to run offshore in marginal weather.
Mahahual has a 24/7 emergency clinic for stabilization. The nearest recompression facilities are on Cozumel and in the Riviera Maya; evacuation can be arranged by operator or clinic. Maintain DAN-style dive insurance and bring card details on board.
Snorkel and freedive safety
Crocodile Restrictions
In-water crocodile encounters are not authorized in Banco Chinchorro. Follow ranger guidance strictly.
Nortes and Port Closures
Cold fronts in Nov - Mar may close Mahahual's port, postponing offshore trips.
Sun and Dehydration
Long boat days require sun coverage, water, and electrolytes; bring a long-sleeve and hat.
Wildlife and protected areas
- Chinchorro is noted as free of white syndrome; help keep it that way by disinfecting gear when required.
- No gloves, no touching, no collecting. Obey mooring rules and follow guides.
- Turtle nesting beaches are protected; avoid lights and crowds at night.
Do Not Do This
Avoid entering when crocodile restrictions. Confirm local briefings before committing.
Emergency contacts
| Contact | Role | Phone | Availability |
|---|---|---|---|
| CONANP - Banco Chinchorro Reserve | Park management / permits | +52-983-285-4623 | Office hours; rangers on duty daily |
| Cozumel International Hospital Hyperbaric | 24/7 chamber | +52-987-872-1430 | 24/7 |
| Capitanía de Puerto (Mahahual via Chetumal) | Port status and maritime safety | +52-983-835-0002 ext. 60909 | Office hours; closures posted publicly |
| Emergency services Mexico | General emergency | 911 | 24/7 |