Snorkelling Tours on Koh Phangan: Organized Trips & Where to Go
Koh Ma is the island's top snorkelling site — reachable on a half-day boat tour or on foot across the sandbar at low tide. This guide covers the organized tour options, the DIY approach, Haad Khom's quieter reef, and Ang Thong Marine Park day trips.
In this guide +
Koh Phangan's clearest waters sit off the north and northwest shore, where the reef around tiny Koh Ma island has made it the most popular snorkelling destination on the island. You can reach it two ways: on an organized half-day boat tour that stops at the reef's best sections, or by walking across the natural sandbar from Mae Haad beach when the tide is low. Beyond Koh Ma, a handful of other spots reward snorkellers who explore — from the fringing reef at Haad Khom on the north coast to the open-water marine park of Ang Thong a short speedboat ride away. This guide covers the main options, what each involves, and how to choose between them.
Koh Ma by boat: the organized half-day tour
The half-day tour from Mae Haad is the most complete way to snorkel the Koh Ma reef. The boat circles the island's north and west sides, reaching coral and fish life that the sandbar walk can't access at ankle or knee depth. Gear is included. Groups are small enough that the reef doesn't feel crowded. This is the right option if you want a guide in the water, floatation support, and access to the deeper reef sections on the far side of the island. Morning departures tend to have calmer sea conditions.
The sandbar walk: DIY snorkelling at low tide
At low tide, a natural sandbar connects Mae Haad beach to Koh Ma — you wade across in thigh-deep water and snorkel the shallower reef sections on the island's south side without booking anything. The crossing itself takes a few minutes. The reef begins immediately at the island's edge. Time it around the tidal window: the crossing is practical only for a few hours either side of low tide, and the reef visibility improves in calm, clear conditions. Mask and fins are available to rent from stalls at Mae Haad beach.
Haad Khom (Coral Bay): north-coast shore snorkelling
Haad Khom, sometimes called Coral Bay, sits on the north coast east of Chaloklum and offers shore snorkelling over a fringing reef. The beach is significantly quieter than Mae Haad and sees fewer visitors, which leaves the underwater environment less disturbed. Entry is directly from the sand. This is a good option for an unstructured session without arranging transport to the Mae Haad side of the island. The bungalow accommodation nearby is simple and close to the water.
Ang Thong Marine Park: snorkelling on a full-day trip
Mu Ko Ang Thong National Marine Park, a limestone island cluster roughly 30 km northwest of Koh Phangan, is the island's most dramatic day-trip destination. Speedboat tours from the pier include snorkelling in the park's sheltered bays, a kayaking section, and a hike to the viewpoint above the emerald lagoon. This is the right option if you want a full-day experience that combines snorkelling with open-water scenery and a landscape that feels genuinely remote. The trip combines well with a first snorkelling experience because the park's calm bays are easy entry.
Good to know
- What's the best snorkelling tour on Koh Phangan? +
- The half-day Koh Ma boat tour from Mae Haad is the most popular option and reaches the reef's best sections. If you want a full-day experience with multiple stops, the Ang Thong Marine Park day trip includes snorkelling alongside kayaking and a viewpoint hike.
- Can I snorkel at Koh Ma without booking a tour? +
- Yes. At low tide you can walk across the sandbar from Mae Haad beach and snorkel the south side of the reef independently. Time it around the tidal window — check tide tables the morning of your visit. For the deeper north and west reef sections, the boat tour is needed.
- When is the best time to go snorkelling? +
- The dry season from roughly December to April offers the clearest water and calmest sea conditions on the north and west coasts. The wet season brings more swell and occasional reduced visibility, though many days remain fine. Morning departures have calmer seas than afternoon trips in most seasons.
- What's the difference between snorkelling at Koh Ma and Haad Khom? +
- Koh Ma has the island's most established reef and the highest-traffic snorkel tours. Haad Khom is a quieter shore-entry option on the north coast with a fringing reef that suits an easy, unstructured session. Koh Ma's deeper reef sections require the boat tour; Haad Khom is walk-in from the beach.
- Do I need to bring my own snorkel gear? +
- Organized tours include mask and fins. For DIY snorkelling from Mae Haad or Haad Khom, rental gear is available from beach stalls. Bring your own if you prefer a well-fitting mask or require a prescription lens.
Last updated 21 July 2026 · places shown are real listings with live Google ratings.