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Diving at the Richelieu Rock

Our Premier Dive Site
at the Surin National Park
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Diving with Whale Sharks

Feather Star

Giant Grouper

Green Turtle

Beautiful Corals on the rocks

Manta Ray


Anemone and Clownfish

Golden Damsel

Richelieu Rock (November - April)


Diving with Whale Sharks

This place is Thailand’s premier dive site and one of the best places in Thailand to see Big Pelagics, macro treats like Harlequin Shrimp and incredible corals all at one site. This huge pinnacle climbing from the depths of the Andaman Sea attracts scuba divers from around the world. The incredible concentration of biodiversity at one single site makes Richelieu famous throughout diving circles.

There are only two safe ways to visit Richelieu Rock – Day trip boat or Liveaboard.

The speedboats are a great way to visit if you are on a short time schedule, or have family who is not divers and will stay at resorts. These trips depart Khao Lak in the mornings and return by evening during the six month season. As Richelieu Rock is exposed, with no protected moorings … day trips can often be canceled due to bad weather.

Usually, liveaboards include at least two dives at Richelieu Rock as part of their itinerary and may add more dives here if guests wish. The most difficult decision for underwater photographers is which lens to dive Richelieu with!! Of course, a wide angle lens is best for whale sharks but there is incredibly good macro photography to do here too.

Where is Richelieu Rock?
Richelieu Rock is part of the Surin National Marine Park, yet located about 18 kilometers east of the islands themselves. Richelieu Rock is just barely exposed at the lowest of tides-thus a navigational hazard for those boats not equipped with a GPS navigation system.
Situated 200 kilometers Northwest of Phuket and only 70 km from Khao Lak – the rock is far closer to the Burmese (Myanmar) border than it is to Phuket.

Diving Richelieu Rock
Located in the middle of the sea, Richelieu Rock provides no shelters for the boats. So there are only a few day trips that visit there and many liveaboards that include this site as part of their routes. As there is no protection most descents are usually done right off the back of the boat – not tied up.

Aiming for a depth down of 30-35 meters for both maximum time and pleasure! Many of the outlying boulders have incredible treats for intrepid visitors. A slow circle of a site should bring you close to your safety stop by the end. As there is a current and very little protection – this is definitely a site for using a surface marker buoy.

You can dive here over and over and see something new.

Richelieu Rock Currents
The currents change constantly, and it’s not always an easy dive. But, if you have an experienced dive guide and they give a well-detailed briefing, you can learn how to hide from the currents and have a very enjoyable dive. Experienced guides in the area prepare for this and will have you drop off the site so you can drift into by the time you have descended.


Pick-up at your hotel between 8:00 and 8:45 am - depends on the location. Our boat departs from iQ-DIVE Pier in Nam Khem at 9:15 am.
We arrive at
Richelieu Rock around 11:15 am
Surin Island around 11:30 am

Now, we conduct our first 60 minutes dive or snorkeling with our professional guides and right after that, we will have a 90 minutes lunch break on board. After that, we prepare for our second 60 minutes dive or snorkeling.
We will be back at the pier between 16:30 and 17:30 am - depends on the dive destination.
Our Mini Bus will take you back to your Resort.

Pick-up times
Lam Kaen: 08:00 - 08:05 am
Nang Thong: 08:15 - 08:20 am
Bang Niang: 08:20 - 08:30 am
Khuk Khak: 08:30 - 08:40 am
Pakarang: 08:40 - 08:50 am
Pak Weep: 08:40 - 08:45 am
Bang Sak: 08:50 - 09:00 am
Nam Khem: 09:00 - 09:10 am

An update to Richelieu Rock trips

Previously, if the speedboat was not able to reach Richelieu Rock due to weather/waves, we would typically divert to Koh Tachai or Koh Bon.
However, this year this option has been eliminated as Similan tickets cannot be purchased on the day. This means the operator has changed the plan to increase the chances of reaching Richelieu.

This season when the weather is not great, the boat will take the mangrove route behind Koh Kho Khao and Koh Prathong. This means the boat will only have 30 minutes in the open ocean to travel to the dive site. Then if the boat is still able to travel, but diving conditions are not safe to dive there, the boat is already much closer to Surin Islands, so we will dive there instead. It is only in the very worst of weather that we would have to dive the Boonsung wreck or cancel entirely.

Trips to the Richelieu Rock only between 10. November and 10. April

This dive site is not recommended for snorkeling or introductory dives (Discover Scuba Diving)

We are happy to arrange as well day trip tours by speed boat to the Similan or Surin Islands.

Furthermore Speedboat Charter for diving or snorkel trips

Schedule and Prices

Thursday & Sunday for experienced divers - 2 dives 4.900,-

All prices in Thai Baht (THB)

Easy to pay with PayPal

Included in the price
Travel Insurance, Transfer from Khao Lak hotel-boat-hotel, lunch, drinking water, soft drinks, fruits, towel, mask and snorkel, fins, life jacket, guide, and liability insurance, NITROX
(There is no right to a refund if Nitrox is not available!)

Not included the price
National Park entry fee per day 500 THB + diving fee per day 200 THB

Rental equipment per day
BCD 200 THB, regulator 200 THB, shorty 3mm 100 THB,
Dive computer 250 THB, LED Flashlight 200 THB, Compass 150 THB

This tour is not recommended for dive beginners and non-divers!

We are happy to arrange day trip tours by speed boat to the Similan or Surin Islands.

Furthermore Speedboat Charter for diving or snorkel trips

Dive Site Map