Khao Lak Similan Islands Thailand

Written by DiveJourney. Built from public sources and local operator knowledge. Last updated Jan 23, 2026.

• Department of National Parks, Wildlife and Plant Conservation - Mu Ko Similan National Park - Seasonal closure dates, park overview, and coverage/communications notes.
• Department of National Parks, Wildlife and Plant Conservation - Mu Ko Surin National Park - Park overview, currents and tides context, travel-by-boat guidance, and contact details.
• Thailand PRD - Similan Islands and Surin Islands seasonal closure announcement - Government communication on annual closure period and conservation rationale.
• Department of National Parks e-ticket system - Official portal for national park e-ticketing system (process and requirements can vary by park).
• Tourism Authority of Thailand - Thailand Digital Arrival Card (TDAC) guideline - TDAC requirement from 1 May 2025 and submission window within 3 days before arrival.
• Thailand Digital Arrival Card official site - Official TDAC submission website referenced by Tourism Authority of Thailand.
• Royal Thai Consulate-General, Los Angeles - Visa exemption information - Official consulate reference for visa-exempt entry conditions (verify for your nationality).
• Bangkok Hospital Phuket - Diving Medicine Center - Diving medicine support and hyperbaric oxygen therapy information and contact.
• SSS Recompression Chamber Network - Recompression chamber network contact information for Thailand.
• Sea Dragon Dive Center (Khao Lak) - seasonal operations - Example operator schedules and trip formats from Khao Lak (confirm current offerings).
• Sunrise Divers - Similan day trip logistics - Example day-trip structure and departure approach from Khao Lak (operator-specific).
• Khao Lak Explorer - Freediving courses - Freediving course offerings based in Khao Lak (operator-specific).