Richelieu Rock

Richelieu Rock is one of the most popular dive sites in Surin Islands National Park. It is a limestone reef that rises almost vertically from a depth of 35 meters, and appears only at low tide, about 1 meter above the surface.

You will see bigeye trevally, barracudas, and an abundance of blue-and-white reef sharks. You will also see schools of fox snappers and whale sharks.

Level

Level

  • Beginner
  • Advanced
Visibility

Visibility

  • 17 m
Current

Current

  • Light Current
  • No Current
  • Strong Current
  • Ripping Current
DIVE TYPES

DIVE TYPES

  • Drift Dive
  • Snorkeling
  • Wall/Drop Off
  • Macro Spot
  • Cleaning Station

Temperature & Visibility

Dives

Wildlife Diversity

Affiliated Training Center

Recommended Training

Open Water Diver

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Boat Diving

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Stress & Rescue

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Enriched Air Nitrox Level 2 (40%)

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Night Diving and Limited Visibility

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Navigation

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Waves, Tides & Currents

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Deep Diving

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Scooter / DPV

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Photo & Video

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Shark Ecology

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Manta And Ray Ecology

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Fish Identification

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Dive sites nearby

Simple and colorful reef, good for beginners and snorkelers. Slightly sloping reef with many coral blocks and a few sand areas.

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Ao Lek, Koh Tachai

An easy dive site with many big rocks. In between, there are always coral blocks. This is a long dive site that is good for a drift dive.

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The Tachai Pinnacle is a rocky dive site with lots of boulders, but between each crevice there are lots of gorgonians and powerful fan corals in all colors.

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Koh Tachai Pinnacle/The Dome

The Dome is a hidden reef point located about 500m south of Tachai Island. A large dome-shaped bedrock shaped like an upturned plate is dotted around a large granite boulder. The top of is at 12 meters and the current can be the strongest in the area depending on the conditions. As a result, there are many large predatory fish such as blue and white trevally, bluefin tuna, barracudas, manta rays, and whale bays.

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Koh Bon Pinnacle

Not for beginners! Koh Bon Pinnacle starts at 22m and ends at 45m or deeper. Beautiful vegetation with lots of yellow soft corals are here. There are no descent ropes available. Doing a negative entry is an advantage!

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Nice shallow area for diving with a slightly sloping reef. You can swim from the North Ridge over the West Ridge and into the bay. Currents are usually weak to moderate.

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Bon Island, about 50 km west of Khao Lak, is an uplifted limestone island about 20 km north of the Similan Islands. This is a long and narrow ridge point on the west side of the island.

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The Wall/Waterfall, Koh Bon

This dive site is actually between Koh Bon Bay and West Ridge. A good place to jump from the boat into the water, as you can dive without currents. Viewing the waterfall from below is a natural spectacle in itself.

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Bon Island, about 50 km west of Khao Lak, is an uplifted limestone island about 20 km north of the Similan Islands. This is a long and narrow ridge point on the west side of the island.

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Boonsung is a zinc dredge that has been underwater for about 30 years and broke into several pieces after the Tsunami. It is a very fishy dive site perfect for beginners and advanced divers. It is recommended to bring a dive light to see into all of the crevices.

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