Marine Park

Mu Ko Chumphon National Park protects mangroves, seagrass, and around 40 islands, with fringing reefs forming from 1 m to 8 m and wide shallow snorkel zones on multiple islands.

Low-crowd Gulf diving

Compared with nearby hubs, Chumphon's dive traffic is lighter. Expect a more local, Thai-focused vibe and more space at the best sites.

Two marine national parks within reach

Base on the mainland and day-trip or liveaboard into Mu Ko Similan National Park and Mu Ko Surin National Park, depending on the season.

Richelieu Rock access

Khao Lak is a practical gateway to Richelieu Rock, one of Thailand's most celebrated sites for schooling fish, macro life, and occasional big-animal days.

Day-trip access to headline South Andaman sites

Koh Lanta operators routinely run full-day trips to Koh Haa, Koh Rok, and the offshore pinnacles Hin Daeng and Hin Muang, letting you sleep in one place while sampling very different underwater terrain.

Warm-water comfort

During the main season, water commonly sits around 28°C to 30°C, so most divers are comfortable in a 3mm suit, with a 5mm option for long days or chilly swimmers.

National Marine Park Access

Many day boats operate inside Tarutao National Marine Park waters, where entry fees and seasonal closures help fund protection and recovery periods.

Short Rides, High Variety

Rotate between shallow reefs, boulder slopes, walls, a wreck, and offshore pinnacles without changing hotels.

Sail Rock access

Boat trips from Koh Phangan target the region's most famous offshore pinnacle, with chimney swim-throughs and pelagic potential.

Beginner-friendly shore reef

Koh Ma offers an easy swim-out reef for snorkeling, refreshers, and low-stress training dives.

National park diving with active management

Sites sit inside Hat Noppharat Thara-Mu Ko Phi Phi National Park, with ranger checks, mooring buoys, and strict rules at Maya Bay that prioritize reef recovery.

Short boat rides, high variety

You can stack walls, pinnacles, and shallow coral gardens in a single day because many signature sites are within about 10 km of Phi Phi Don.