Hong Island Tour from Krabi
This hong island tour departs from Ao Nang Beach and visits the sheltered lagoon of Hong Island, Lading Island's white sands, and Pakbia Island's coral gardens. Most hong island tour tours include snorkeling gear, lunch on the beach, and kayaking through limestone caves. The archipelago lies within Than Bok Khorani National Park, where emerald waters meet towering karst cliffs.
The 28-square-kilometer archipelago now known as Than Bok Khorani National Park was gazetted in 1991, protecting a cluster of karst formations that rise vertically from the Andaman Sea 25 kilometers northwest of Ao Nang.
Koh Hong, the largest and most visited island in the group, shelters a landlocked lagoon accessible only through a narrow cleft in the limestone wall—a tidal pool that remains gin-clear even during southwest monsoon surges. The Moken sea nomads called these formations hong, Thai for "room," centuries before permanent settlements appeared on the Krabi coast.
Marine surveyors documented over 160 hard-coral species on the shallow reefs surrounding Pakbia and Lading islands in 2019, making the park's eastern fringe one of the Andaman's most biodiverse snorkeling zones for day visitors. The lagoon itself sits at the base of a 120-meter limestone dome, its interior walls colonized by Asian fairy bluebirds and white-bellied sea eagles. Commercial speedboat operators began running scheduled Hong Island tour itineraries from Ao Nang in 1998, and by 2010 the park authority had capped daily arrivals at 300 vessels to prevent anchor damage to seagrass beds.
Today's hong island tour from phuket or Railay Beach typically combines three anchorages: Pakbia Island's coral wall, the hong lagoon for swimming, and Lading Island's crescent beach. Tour operators depart between 08:30 and 09:00 to reach Koh Hong before the mid-morning surge of longtail boats from mainland piers. The 300-baht national park conservation fee, introduced in 2015, funds mooring-buoy installation and reef monitoring across all 13 islands in the Than Bok Khorani zone. Hong island tour from ao nang operators emphasize the importance of arriving during the early window—kayakers and snorkelers who enter the lagoon after 10:30 often find visibility reduced by sediment stirred from shallow zones.
The hong itself measures roughly 160 meters across, with depths ranging from knee-level at low tide to two meters at high water. Mangrove saplings line the interior walls, and the only exit is the 12-meter-wide passage that speedboats navigate at idle speed. Park rangers stationed on Koh Hong's northern beach enforce a no-drone policy and prohibit fishing within 500 meters of the lagoon entrance.
6 hr
