Safety · Destination Guide
Rock reefs, volcanic islands, and winter whales on Mexico's Pacific bay
Diving and snorkeling in Bahia de Banderas is generally boat-based and can be very safe with a good operator, but it is not a pool. Expect changing visibility, occasional surge, and heavy small-boat traffic at popular sites. Protected areas like Islas Marietas have strict rules that you should treat as part of your safety plan.
Puerto Vallarta is a major tourism center with hospitals, ambulance services, and medical clinics. In an emergency, call 911. Hospitals used by travelers include private facilities in Puerto Vallarta (for example AmeriMed and San Javier) as well as public services. For diving injuries (especially suspected decompression illness), activate emergency services, notify your operator, and contact a diving medical hotline such as DAN so you can be routed to appropriate care.
Hyperbaric oxygen therapy clinics exist in Puerto Vallarta. For serious dive injuries, do not self-transport. Use emergency services and professional medical coordination.
Surge and overhead environments in Los Arcos
Swim-throughs and tunnels are tempting, but surge can push you into rock. Stay out of overhead areas unless conditions are calm and your guide briefs a conservative route.
Boat traffic at popular snorkel stops
Los Arcos and some Marietas zones can be busy. Stay with your guide, surface slowly, and use a visible SMB or group float so skippers can see you.
Current-dependent offshore sites
El Morro and Anegados can develop strong currents. If you are not comfortable with blue-water ascents and SMB use, choose sheltered bay sites instead.
Rainy-season runoff and debris
After heavy rain, visibility can drop and floating debris can appear. Operators may reroute to more sheltered coves. Keep your schedule flexible in Aug to Oct.
Do Not Do This
Avoid entering when surge and overhead environments in los arcos. Confirm local briefings before committing.
| Contact | Role | Phone | Availability |
|---|---|---|---|
| Emergency services | Police, ambulance, fire dispatch | 911 | 24/7 |
| Cruz Roja (Puerto Vallarta) | Ambulance and emergency medical assistance | +52 322 222 1533 | 24/7 |
| Proteccion Civil y Bomberos Puerto Vallarta | Civil protection and fire services | +52 322 178 8000 | 24/7 (911 for dispatch) |
| Hiperbarica Vallarta | Hyperbaric oxygen therapy clinic (non-emergency contact) | +52 322 209 8483 | Business hours (confirm) |
| Visitor legal assistance (Puerto Vallarta) | Assistance line for visitors | +52 322 222 2224 | Varies |