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!
20 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)
Hallelujah – 4D/4N Similan & Surin Islands
Hallelujah runs 4 night trips to the Similan Islands and Richelieu Rock through the season from mid October to end of April. The MV Hallelujah arrived on the scene for the 2012 season, and has been one of our best selling boats for the last 7 yea [...]
Prices starting from 8750 / day
The Dolphin Queen Khao Lak based liveaboard will suit those wanting a lower price Similan Islands trip. If you're backpacking or on a tight budget, this could be the one for you. Despite being a low price, Dolphin Queen is professionally run with [...]
Prices starting from 4900 / day
Bavaria is a new liveaboard launched in late 2015, based in Khao Lak and offering a mixed schedule of 3 or 6 night trips in Thailand and 6 night trips in Myanmar. The boat was designed by her German owner who has many years of experience here in [...]
Prices starting from 6900 / day
A new liveaboard since 2018, The Phinisi (also called Cheng I Sao) is an Indonesia Phinisi style sailing boat, built in 2007. The Phinisi has been operating in Indonesia, the Maldives and Thailand, and now has a full schedule for Thailand and My [...]
Prices starting from 300 / day