Koh Lanta

Core Safety Habits That Matter Here

• Match the site to the diver: keep Koh Rok and protected Koh Haa areas for newer divers; reserve Hin Daeng/Hin Muang for advanced divers with current experience.
• Carry an SMB and know how to use it: offshore ascents can be blue-water, with boat traffic and drift.
• Follow local briefings: operators often use descent/ascent lines at current-exposed pinnacles.
• Plan conservative profiles: long boat days plus repetitive diving can stack fatigue.

Freediving and Snorkeling Safety

• Use a buoy/flag, do not freedive alone, and avoid mixing deep freediving immediately after heavy scuba schedules.
• For snorkeling, wear fins, consider a flotation vest, and stay out of boat lanes.

Koh Lanta has local medical facilities for routine care, but serious dive injuries may require evacuation to higher-level hospitals on the mainland or Phuket. For suspected DCS or serious marine injuries, call Thailand's medical emergency number and inform your dive operator immediately.

• Consider dive accident insurance (for example DAN) for any itinerary that includes offshore current sites.
• Keep hydration high on boat days and do not fly after diving without following no-fly guidelines from your training agency.

How to Dive Koh Lanta Responsibly

• No touch, no take: do not touch coral, do not collect shells or marine life, and do not feed fish.
• Control buoyancy: many sites are shallow or have fragile soft corals where fin contact causes damage.
• Use mooring buoys when provided: do not anchor on reef structure.
• Use reef-safe sunscreen and physical sun protection: long boat days make sunburn likely.
• Respect park management: pay required national park fees, follow ranger instructions, and accept seasonal closures during the monsoon as part of reef recovery.

Many day-trip zones operate inside Thailand's national park framework, which is designed to reduce anchor damage and manage visitor impact through fees and rules.