Surin Islands & Richelieu Rock

Surin Islands

Surin Islands & Richelieu Rock

2 Dives / Lunch on the island - Full Day

5,400 THB / PERSON

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** This Trip Is For Certified / Licensed Divers Only **

If you are not a certified/licensed diver please go to this link

Surin Islands

The two main islands are Ko Surin Nuea (North Island) and Surin Dtai (South Island) is about the same size and form, separated by a very flat, extended channel, which is only about one meter deep at low tide. As the tides wash fresh seawater between the two islands every day, reefs have recovered rapidly after coral bleaching in 2010. Now they offer excellent diving and snorkeling conditions again. In particular, the hard corals have bloomed in recent years and are home to countless animal species.

The entire archipelago of Surin covers an area of more than 320 km2 and also includes the great diving area at Richelieu Rock, where Manta Rays and Whale Sharks can be spotted.


If you want to see some of the best diving and marine life, the Surin Islands are the place to be.

Here are some of Thailand's most untouched and extensive reefs and corals. Here you will find turtles and fish species that aren’t found in the Similans or elsewhere. Some of the fish species are the Bumphead Parrotfish, the Napoleon Wrasse, the Yellow Masked Angelfish, the Barramundi Cod, and the Tomato Anemonefish.

If you decide to go diving in the Surin Islands, you do not have to worry about having to share the area with too many tourists.

Marine life

The Surin Islands were designated as a National Marine Park in 1981 and are a UNESCO World Heritage Site. Marine biologists pay the utmost attention to this park and its surroundings, which is obvious. If you dive here, you will find some of the most pristine coral reefs and marine life in Thailand.

Underwater, there is a great variety of creatures, such as Pickhandle Barracuda, Cardinalfish, Five-line Snappers, Twin Spot, Large Humpback Bream, Blue Spotted Pinefish, Mantis Crabs, White Tip Reef Sharks, Ghosted Pipefish of all kinds, Manta Rays, and Whale Sharks, just to name a very small selection.

The Surin National Park also includes Richelieu Rock, one of the best dive sites in the world.

The diving season lasts from October to May, although many recommend a visit between December and April. The rest of the year is usually rainy and windy, and the marine parks are closed.

Richelieu Rock

Richelieu Rock island

“One of the best dive sites in Asia”

The world famous “Richelieu Rock” is waiting for you!!

Our Richelieu Rock diving daytrip will take you to this beautiful dive site in 1:30 with our fast speed boat.

Richelieu Rock is a massive underwater rock formation that holds an important diversity of marine life, from small seahorses to giant whale sharks. You will almost certainly find big schools of trevally and barracuda and other schooling fish such as snappers and fusiliers. The very top of the rock is just visible at low tide, but submerged at high tide. Below the surface, Richelieu Rock is approximately horseshoe shaped, consisting of several groups of rocks, pinnacles, overhangs, and small caves. It drops most steeply on the north and west sides, while the south side slopes more gently on the “inside” of the horseshoe. The maximum depth is about 35 meters, but it can be dived mostly at 20–28 meters. 

This is an amazing dive site, which is a true paradise for photographers and divers. You will make 2 dives at Richelieu Rock, and between dives, after the 1st dive, the boat will travel. We go to lunch Relax in Surin National Marine Park for about an hour and the boat will return for a second dive, which will give you plenty of time to explore this massive rock formation. You can dive as an Open Water there, but be aware of a bit more current. It’s nice if you have either the deep dive (30m) or Advanced certification so you can explore the full depth of the dive site.


Light Breakfast ,Lunch
Transfers to and from Khao Lak , Bang Niang and The Sea Sky Travel Pier
Service staff and dive leads
Snacks soft drinks, coffee and tea.


National Park entrance fee
Equipment Rental
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Boat Schedule - Richelieu Rock
SundaySurin Islands & Richelieu Rock ( Lunch on the Surin Island )2 Dives
MondayNot Available-
TuesdayNot Available-
WednesdaySurin Islands & Richelieu Rock ( Lunch on the Surin Island )2 Dives
ThursdaySurin Islands & Richelieu Rock ( Lunch on the Surin Island )2 Dives
FridayNot Available-
SaturdayNot Available-

More Information

Phone: +6684-156-9514


Booking Day Trip: [email protected]
Booking Liveaboard: [email protected]




Pick up from hotels or meet at Sea Sky Travel Pier


Departure from Sea Sky Travel Pier by speed boat


Arrive at the dive site


First dive (Diving time 50 minutes)


Lunch Buffet at Surin Island and relaxing time


Leaving the Island


Second dive (Diving time 50 minutes)


Depart from Dive site


Arrive at the Sea Sky Travel Pier and transfer back to hotel