Safety · Destination Guide
Miami
A city base with national-park shipwrecks and reef diving in every direction
Updated Dec 13, 2025 • 14 sources
Safety And Conservation
South Florida's biggest hazards are boat traffic, current, and weather. The region is also ecologically sensitive, with reefs under pressure. Follow diver-down rules, use mooring buoys, avoid touching coral, and treat wildlife encounters as look-but-dont-touch moments.
Top Risks
- Primary risk: Boat traffic and diver-down rules
- Secondary risk: Current and drift procedures
- Emergency contact: Emergency Services (911)
- Safety overview: South Florida's biggest hazards are boat traffic, current, and weather.
Dive safety
Water and Boat Safety
- Use a diver-down flag for shore diving and snorkeling. Florida law references 91.4 m in open water and 30.5 m in inlets and channels for diver and vessel proximity. Plan entries that keep you within those limits.
- Expect drift procedures on many Atlantic-coast dives. Carry an SMB, stay with your buddy, and follow the boat's pickup plan.
Weather and Planning
- Check the marine forecast every day. Winter cold fronts can change sea state quickly.
- In summer, watch for lightning and fast-moving storms. If conditions deteriorate, call the dive and come back another day.
Freediving-specific
- Use a float and flag, run one-up/one-down buddy procedure, and avoid pushing depth when current and chop increase surface workload.
For any serious dive injury, call local emergency services first, then contact Divers Alert Network (DAN) for consultation and coordination.
- Local EMS: 911
- DAN Emergency Hotline: +1-919-684-9111 (24/7)
Miami has hyperbaric medicine resources in the region, but the correct destination depends on the injury and medical direction. Do not self-refer to a chamber without coordination through EMS or DAN.
Snorkel and freedive safety
Boat traffic and diver-down rules
South Florida has heavy boating. Use a diver-down flag for shore entries and stay close to it. Florida law ties safety distances to 91.4 m in open water and 30.5 m in inlets and channels, so plan entries that keep you within that range.
Current and drift procedures
The Gulf Stream influence means some dives are true drift dives with live-boat pickup. Carry an SMB, stay with your buddy, and follow the captain's ascent and pickup plan.
Thunderstorms and lightning
Warm months bring fast-building storms. If you hear thunder, treat it seriously and get off the water early. Build schedule slack so you do not feel pressured to dive in marginal conditions.
Hurricane season planning
Atlantic hurricane season runs June through November. Trips can still be great, but choose refundable options and keep a land-based Plan B for any windy week.
Wildlife and protected areas
- Do not touch or stand on coral and do not collect artifacts. Many wreck sites in Biscayne National Park are part of a protected cultural resource trail.
- Use mooring buoys where available. In Biscayne National Park, do not anchor within 91.4 m of a park mooring buoy.
- Use reef-safe sunscreen, secure all gear to avoid contact with the bottom, and practice good buoyancy over reef structure.
- Respect wildlife and nesting areas. Sea turtles nest on local beaches during the main season, and marked nests are legally protected.
Do Not Do This
Avoid entering when boat traffic and diver-down rules. Confirm local briefings before committing.
Emergency contacts
| Contact | Role | Phone | Availability |
|---|---|---|---|
| Emergency Services | Police/Fire/EMS | 911 | 24/7 |
| DAN Emergency Hotline | Dive medical advice and coordination | +1-919-684-9111 | 24/7/365 |
| Florida Fish and Wildlife Conservation Commission (FWC) Wildlife Alert | Report stranded or injured sea turtles and other wildlife | 1-888-404-FWCC | 24/7 |
| Biscayne National Park (general information) | Park information and regulations | 786-335-3620 | Business hours vary |
| Biscayne National Park mooring buoy issues | Report broken or unsafe mooring buoy gear | 305-230-1144 | Business hours vary |