Koh Doc Mai (or Koh Dok Mai) is a small limestone island jutting vertically out of the sea about 20km east of Phuket. It’s dived every day as part of 3 dive trips to the King Cruiser Wreck or sometimes as the 3rd dive on the way back from Phi Phi. The depth can get down to 25 meters, but as a 35rd dive you normally do Koh Doc Mai as an 18 meter dive. The vertical limestone walls continue underwater with a sheer drop on the east side and a slightly gentler slope on the west side. The name “Koh Doc Mai” means Flower Island, although the island has no flowers on it! There’s no way to land on the island and it has no construction on it.
The wall on the east side of Koh Doc Mai is where people tend to dive. The wall is covered in soft corals, gorgonians, sea whips and fan corals. It’s a place to dive slowly looking for smaller critters like seahorses or ghost pipefish. Nudibranchs are common too as well as small white-eyed moray eels. It’s a real macro lover’s site, although bigger fish like leopard sharks or schools of various reef fish can be found.
Seahorse at Koh Dok Mai
At the base of the wall on the east side of Koh Doc Mai are a couple of caverns. You should not enter without proper training as they reach quite far back into the rock. Note that currents can be fairly strong at times. This can make it hard to move slowly as you may be pushed along the wall by the current for a while until you reach a point where the current is having less effect. Visibility here can be as high a 20 meters, but can be less than 10 meters at times.
(above) Koh Doc Mai Dive Site Map
Trip Booking – Contact Sunrise Divers
Koh Doc Mai can be dived year round from Phuket. There are day trips every day which include Koh Dok Mai combined with the King Cruiser Wreck and Shark Point. All trips include 3 dives, one of which will be at Koh Doc Mai – usually this is the 3rd dive of the day although on some trips Koh Doc Mai can be dived first if currents are not suitable for the wreck.
A Real Dive Center With A Real Shop
Sunrise Divers is not just a website. We are right here to help you with a PADI 5 Star shop, helpful and experienced staff, quality rental equipment and plenty of local knowledge. We hope to meet you in person!
21 Years of Thailand Diving Experience
Sunrise Divers has been operating in Phuket, Thailand since 1999 logging thousands of dives all over the region. We know the area, we know the dive sites, we know the boats. Let us help you find the right trip!
Liveaboard Price Guarantee
We advertise all trips at the official rates agreed with the boat operators. If you are offered the same trip on the same liveaboard at a lower price, tell us! We promise to get you the best trip at the best possible price!
We Make Booking Liveaboards Easy
With our many years of experience, booking with Sunrise Divers is quick and easy. Got a question? We'll answer! Need to talk? Call us! Online credit card payment with no fees is possible for most trips. We know the boats and the area better than anyone. See you here!
Similan Islands Liveaboards (Thailand)
Andaman Tritan – Similan & Richelieu Rock
MV Andaman Tritan operates trips in the Similan islands and Richelieu Rock, and is a comfortable and very reasonably priced wooden hulled liveaboard boat launched in October 2002 and totally refurbished in 2014. She is 24.5m long and 5.5m wide. D [...]
Prices starting from 6000 / day
MV DiveRACE Class E is a Thailand liveaboard which was launched in April 2015. There are trips to the Similan Islands and Richelieu Rock, plus some longer trips that also include the Phi Phi Islands. She takes 20 divers in 10 cabins, all with air [...]
Prices starting from 9500 / day
The Deep Andaman Queen was having a complete make over in 2019. She has been extended by 3 meter and got 2 more cabins.
Cruises in the Similan Islands / Richelieu Rock and also into Myanmar (Burma) with the liveaboard "Deep Andaman Queen". This [...]
Prices starting from 7875 / day
Diving in Thailand and Myanmar - The luxury liveaboard Diva Andaman runs 6 night trips to the Similan Islands and the Mergui Archipelago. The boat was completed in 2009 and has been one of our most popular boats. Early booking is suggested. It's [...]
Prices starting from 18800 / day