Phi Phi Snorkeling Map

The national park boundary encloses all major snorkel sites, a regulatory perimeter that dictates mooring zones and visitor flow patterns. Park rangers monitor fifteen designated snorkel areas, each marked by conservation buoys that double as navigation aids when surface currents reduce visibility. Underwater topography determines site accessibility. The western coastline of Phi Phi Don drops steeply, creating wall dives unsuitable for casual snorkelers. Eastern sites like Tonsai Bay and Loh Dalum feature gradual slopes where reef flats begin two meters below the surface. Phi Phi Leh's enclosed lagoons offer zero-current conditions but restrict entry by longtail boat only, a constraint that shapes daily route planning. Bamboo Island, the northernmost mapped site, lies 45 minutes by speedboat from Tonsai Pier and requires calm-sea conditions—the channel crossing eliminates it from rainy-season itineraries. Boat operators cluster departures between 08:00 and 10:00 to secure mooring positions at high-demand sites before midday congestion peaks. A typical route follows the current: Maya Bay at first light when fish activity peaks, Pileh Lagoon by mid-morning when sunlight penetrates the cliff walls, then Shark Point on the return leg. Each stop lasts 30-45 minutes, enough time to cover the marked reef perimeter without extending into the next scheduled group's window. Reef conditions vary by exposure. Sites facing the Andaman Sea experience seasonal plankton blooms that reduce visibility but concentrate manta rays and whale sharks during migration months. Sheltered eastern reefs maintain year-round clarity but support smaller fish populations. Depth charts published by the park authority mark thermocline layers where temperature drops signal deeper water—useful for gauging distance from shore when landmarks disappear. Current patterns shift with the lunar cycle, strongest during new and full moons when tidal exchange accelerates through narrow channels between islands. Conservation zones prohibit fin contact with coral, a rule enforced through buoy placement that creates swimming corridors above fragile staghorn colonies. The 400 THB park fee funds these markers and the seasonal reef assessments that update official snorkel charts, ensuring navigation data reflects storm damage and coral recovery zones.