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Shark Bay
Beaches & Islands
Koh Samui

Shark Bay

4.1(1,450 reviews)

Shark Bay is one of Koh Samui's more natural and understated coastal spots, valued for its marine life rather than its beach facilities. The waters hold soft corals, abundant fish, and a genuine chance of encountering sea turtles and small sharks in the wild — experiences that set it apart from the island's more polished, resort-heavy beaches. It draws visitors primarily for snorkelling, and the underwater scenery can be rewarding when conditions cooperate. Most visitors arrive as part of an organised snorkelling or diving day trip, which is the practical way to experience the bay. Water clarity is weather-dependent — overcast days can bring murky visibility, while sunny mornings tend to offer the best conditions for spotting marine life. The shoreline has coral fragments and rocks near the water's edge, so water shoes are strongly advised. One practical detail worth knowing before visiting: access to the beach currently runs through the Haad Tien resort, which charges an entry fee of around 200 THB per person. This is a point of frustration for some visitors, as the beach is publicly accessible. Booking through a tour operator — a snorkelling day trip typically covers logistics, transport, and sometimes entry — can be a sensible way to manage both cost and convenience. Sunny morning visits generally yield the clearest water and the best chances of wildlife encounters.

Experience hints

Visitor Reviews

Went on a one-day trip to Shark Bay with Oxygen Tour. Got there around 2 PM — it was drizzling a bit, not much sunlight, and the water was kinda murky. There are lots of soft corals around, which the sea turtles love to eat. I was lucky to see two leatherback turtles! The spot was really nice, but quite crowded.

Great atmosphere and crystal-clear water. Be careful though, there are lots of coral fragments and rocks, I cut my foot here. Snorkeling is not too impressive, but you might get lucky and see a big turtle, which is amazing. The place is quite busy, but food and drinks are available at reasonable prices.

Amazing diving spot with great views. Went here with a snorkeling tour which I would highly recommend. Were able to see many corals, fish and even huge sea turtles!!

Visitor Information

Best time to visit

January – August

Avoid: October – December (Gulf Coast monsoon)

Rainy season

October – December

Avg. temperature

24°C – 32°C(75°F – 90°F)

Crowds

High

Peak: July – August & December

Getting there

Koh Samui Airport (USM) has direct flights from Bangkok and regional hubs (Bangkok Airways monopoly). Ferry from Surat Thani takes ~1.5 hrs — a cheaper option.

Getting around

  • Songthaews (fixed routes around the ring road)
  • Motorbike or scooter rental
  • Taxis (metered or negotiate upfront)
  • Grab available in main areas

Where to stay near Shark Bay

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Tips for Visiting Beaches & Islands

Check Monsoon Seasons

The Andaman coast (Phuket, Krabi) has rough seas from May to October. The Gulf coast (Koh Samui, Koh Phangan) is roughest from October to December. Plan your island-hopping around these windows.

Snorkel Gear Is Cheap to Buy

Rental gear is often scratched and ill-fitting. Buy a decent mask and snorkel at a Tesco Lotus or Big C for 300–500 THB — cheaper than two days of rentals and much more hygienic.

Book Ferries on 12Go.Asia

The 12Go platform lets you compare ferry operators, times, and prices between islands. Book a day or two ahead in high season. Avoid the cheapest operators if reviews mention safety concerns.

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