Koh Tachai Pinnacle/The Dome

Divesite Image
© Hobo-Ya Similan, 83120 Phuket
Divesite Image
© Hobo-Ya Similan, 83120 Phuket
Divesite Image
© Hobo-Ya Similan, 83120 Phuket
Divesite Image
© Sea Turtle Divers, 82220 Phang Nga
Divesite Image
© Arndt N. (#3705153)

Koh Tachai Pinnacle/The Dome

★★★★☆ (11,277)

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.

The middle layer is filled with a variety of yellowbacks, yellow dashes, blue dashes, and other fusiliers. At dawn and dusk you can see them being attacked by bluefin trevelly and a tornado of 1,000 blackfin barracuda. Manta rays and whale sharks are seen.

Dive Activity

Courses and Events

NORTH ANDAMAN

NORTH ANDAMAN

NORTH ANDAMAN ROUTERichelieu - Similan - Koh BonFebruary 10-15, 2027⛴️ MV SummerDay 1 - February 1017:00 Depart by plane to Phuket(Recommended flights before 5:30 PM)19:00 Depart by van to the pier(You should arrive in Phuket no later than 7:30 PM.)21:00 The boat departs.Day 2 - February 118:00 Dive 1 - (Check Dive)11:00 Dive 2 -14:00 Dive 3 - 18:30 Night Dive #4 - Day 3 - February 128:00 Dive 1 - 11:00 Dive 2 - 14:00 Dive 3 - 18:30 Night Dive #4 Day 4 - February 138:00 Dive 1 -11:00 Dive 2 - 14:00 Dive 3 -18:30 Dive 4 - Day 5 - February 148:00 Dive 1 - 11:00 Dive 2 - 14:00 Dive 3 - Return to the pier and rest on the boat.Day 6 - February 15Traveling by plane back to Bangkok(Recommended flights: 12:00 p.m. onwards)Dive sites are subject to change.As appropriate, according to weather conditions, waves, and wind. For everyone's safety, please...Room Type / Price per PersonDouble Bedroom 28,500฿Twin bed room 26,500฿Bunk bedroom 24,500฿** Price Includes **✅15 Dives✅Accommodation, food, and beverages on the boat✅Airport shuttle – Pier✅️ Deep Diving Insurance Coverage of 500,000 Baht✅ North Andaman Limited Edition T-Shirt** Price does not include **-Airfare-Alcoholic beverage charges-Actual national park entrance fee- Equipment rental fee: 500฿/day-Dive computer rental fee: 200฿/day-Flashlight rental fee for night dives: 150฿/day-Take an advanced course for an additional 4,000 baht. Training in the pool for one day.-Tipping for boat crew

February 10, 2027 +5 More
$742.35
THB 24,500.00

Potential Wildlife Sightings

Wildlife Sightings are Based on User Generated Content

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 27

iStock-Global_Pics
Barracuda

Barracuda
313 Sightings
J
43
F
75
M
75
A
36
M
10
J
0
J
0
A
0
S
0
O
0
N
33
D
41

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 200

Alamy-WaterFrame
Moray Eel

Moray Eel
235 Sightings
J
31
F
46
M
52
A
35
M
0
J
0
J
0
A
0
S
0
O
0
N
34
D
37

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 300

Alamy/Reinhard Dirscherl
Octopus

Octopus
36 Sightings
J
0
F
19
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
17
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 600

iStock/ultramarinfoto
Wrasse

Wrasse
33 Sightings
J
0
F
17
M
16
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0
Shutterstock-Shane Myers Photography
Green Turtle

Green Turtle
31 Sightings
J
0
F
0
M
11
A
10
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
10
iStock-crisod
Reef Manta Ray

Reef Manta Ray
20 Sightings
J
0
F
0
M
20
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0
iStock/Divepic
Giant Oceanic Manta Ray

Giant Oceanic Manta Ray
16 Sightings
J
0
F
0
M
16
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 40

iStock-wrangel
Triggerfish

Triggerfish
215 Sightings
J
30
F
38
M
46
A
35
M
0
J
0
J
0
A
0
S
0
O
0
N
35
D
31

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 100

iStock-burnsboxco
Parrotfish

Parrotfish
214 Sightings
J
25
F
43
M
45
A
34
M
0
J
0
J
0
A
0
S
0
O
0
N
35
D
32

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 250

Shutterstock-Henry_and_Laura_Whittaker
Grouper/Basslets

Grouper/Basslets
213 Sightings
J
21
F
42
M
45
A
32
M
10
J
0
J
0
A
0
S
0
O
0
N
30
D
33

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 28

Udo Kefrig
Clownfish

Clownfish
213 Sightings
J
23
F
54
M
42
A
36
M
0
J
0
J
0
A
0
S
0
O
0
N
30
D
28

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 90

Shutterstock-Rich Carey
Angelfish

Angelfish
206 Sightings
J
21
F
45
M
44
A
24
M
0
J
0
J
0
A
0
S
0
O
0
N
40
D
32

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 130

Shutterstock_Krzysztof Odziomek
Butterfly Fish

Butterfly Fish
166 Sightings
J
16
F
40
M
36
A
21
M
0
J
0
J
0
A
0
S
0
O
0
N
29
D
24

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 40

iStock-Hoatzinexp
Jackfish

Jackfish
158 Sightings
J
21
F
24
M
33
A
29
M
0
J
0
J
0
A
0
S
0
O
0
N
25
D
26

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 8

Alamy-Reinhard Dirscherl
Bannerfish

Bannerfish
155 Sightings
J
15
F
36
M
33
A
21
M
0
J
0
J
0
A
0
S
0
O
0
N
26
D
24

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 55

Shutterstock-RLS Photo
Lobster

Lobster
139 Sightings
J
22
F
24
M
32
A
21
M
0
J
0
J
0
A
0
S
0
O
0
N
17
D
23

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 150

Shutterstock-aquapix
Sweetlips and Grunts

Sweetlips and Grunts
131 Sightings
J
20
F
31
M
26
A
18
M
0
J
0
J
0
A
0
S
0
O
0
N
16
D
20

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 85

iStock-mirecca
Surgeonfish

Surgeonfish
130 Sightings
J
13
F
26
M
23
A
22
M
0
J
0
J
0
A
0
S
0
O
0
N
34
D
12

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 15

Shutterstock-Al McGlashan
Tuna

Tuna
126 Sightings
J
24
F
27
M
25
A
15
M
0
J
0
J
0
A
0
S
0
O
0
N
14
D
21

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 60

iStock-Global_Pics
Spiny Lobster

Spiny Lobster
123 Sightings
J
22
F
29
M
25
A
15
M
0
J
0
J
0
A
0
S
0
O
0
N
20
D
12

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 130

AdobeStock-JirinaVFR
Pufferfish

Pufferfish
107 Sightings
J
10
F
30
M
24
A
11
M
0
J
0
J
0
A
0
S
0
O
0
N
15
D
17

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 110

iStock-Rainer von Brandis
Snapper

Snapper
103 Sightings
J
13
F
26
M
21
A
16
M
0
J
0
J
0
A
0
S
0
O
0
N
13
D
14

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 12

iStock/cinoby
Lionfish

Lionfish
101 Sightings
J
14
F
24
M
13
A
19
M
0
J
0
J
0
A
0
S
0
O
0
N
16
D
15

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 90

Shutterstock-Levent Konuk
Goatfish

Goatfish
60 Sightings
J
10
F
18
M
17
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
15
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 350

Alamy-Andre Seal
Damselfish

Damselfish
43 Sightings
J
10
F
14
M
19
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3000

SSI-Peter-Schinck
Nudibranch

Nudibranch
43 Sightings
J
0
F
20
M
11
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
12

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 250

iStock-Miguel-Angelo-Silva.
Scorpionfish

Scorpionfish
42 Sightings
J
0
F
13
M
16
A
13
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 80

iStock-bearacreative
Emperor

Emperor
38 Sightings
J
0
F
16
M
12
A
10
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 60

iStock-Global_Pics
Soldierfish

Soldierfish
27 Sightings
J
0
F
11
M
16
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 60

iStock-Global_Pics
Squirrelfish

Squirrelfish
25 Sightings
J
0
F
12
M
13
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3

Shutterstock_Leo Lorenzo
Trumpetfish

Trumpetfish
23 Sightings
J
0
F
10
M
13
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3400

Shutterstock-Shane Gross
Shrimp

Shrimp
18 Sightings
J
0
F
18
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 1500

iStock-ifish
Hard Corals

Hard Corals
16 Sightings
J
0
F
0
M
0
A
16
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 3500

Unsplash-pascal van de vendel
Soft Corals

Soft Corals
14 Sightings
J
0
F
0
M
0
A
14
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0
AdobeStock-Nikolai Sorokin
Blacktip Reef Shark

Blacktip Reef Shark
11 Sightings
J
0
F
0
M
0
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
11
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 6

Peter-Schinck-SSI
Ghost Pipefishes

Ghost Pipefishes
11 Sightings
J
0
F
0
M
11
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 1900

Shutterstock-John A. Anderson
Starfish

Starfish
11 Sightings
J
0
F
0
M
0
A
11
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 25

AdobeStock_Vladimir Wrangel
Boxfish

Boxfish
10 Sightings
J
0
F
0
M
10
A
0
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

The image shown is a representative illustration and does not depict every individual animal in this category.

Total number of species approx.: 1700

Shutterstock-Ethan Daniels
Sea Cucumbers

Sea Cucumbers
10 Sightings
J
0
F
0
M
0
A
10
M
0
J
0
J
0
A
0
S
0
O
0
N
0
D
0

Dive Centers Catering This Dive Site

What The Dive

What The Dive

98/198 Perfect Park (Ratchapuek-Pathumthani) moo 3, Bangdue, Mueang, 12000 Patumthani, Thailand
Phuket Dive Tours - Kata Beach

Phuket Dive Tours - Kata Beach

95 Soi Pakbang, 83130 Kata, Thailand
Blue Planet Divers

Blue Planet Divers

150/1 Moo 1, Saladaan, 81150 Koh Lanta, Krabi, Thailand
Scubadeep, Scubadeep Patong

Scubadeep, Scubadeep Patong

186 Taweewong Road, 83150 Phuket, Thailand

Sea Turtle Divers

57/12 Moo 5 Khao Lak, Bang Niang, 82220 Phang Nga, Thailand

Bambus Diving

232/15 Pangmoung Sai kor Road, Patong, 83150 Kathu, Thailand

Sirolodive

43/52 Viset Road, T. Rawai, 83130 Phuket, Thailand

ScubaNicks, Victoria Fawcus-Robinson

90/8 Kanjana 2, Soi Sai Yuan, 83130 Phuket, Thailand

Sea Bees Diving

1/3 Moo 9 Viset Road, 83130 Phuket, Thailand

Champagne Diving

36/10 Moo 2, Soi Palai, Chalong, Muaeng, 83130 Phuket, Thailand

Dive Syndicate

68/26 Moo5, 82220 Taknapa, Thailand

Big Blue Diving Khao Lak

4/53 Moo 7, Khuk Kak, Takua Pa, 82190 Phang Nga, Thailand

Scuba Quest Dive Center

121/7 Moo.3, 83150 Kamala, Phuket, Thailand

Dive Sites Nearby

Sea Turtle Divers, 82220 Phang Nga
Boulder City (★4.1)

Boulder City (★4.1)

Huge, bizarre boulders underwater that make it look like a city. You can easily find stream shadows if you want to. It leads a mouring-line down to 18m.
Sea Turtle Divers, 82220 Phang Nga
Shark Fin Reef (★4.2)

Shark Fin Reef (★4.2)

Shark Fin Reef is easy to dive and is, therefore, an absolute highlight even for beginners. The granite rocks go slowly into the depths of the dive site and can be dived at any depth up to max. 30 meters.
Sea Turtle Divers, 82220 Phang Nga
Chinese Wall (★4.7)

Chinese Wall (★4.7)

Chinese Wall is on the south tip of island 4, named as such because it is a very long rock wall. Currents are be possible at depth. In the shallow area, you can hide from the current between the rocks.
Mares, Janez Kranjc
Khao Na Yak (★4.0)

Khao Na Yak (★4.0)

Koh Na Yak, near Khao Lak, is a shallow reef dive (max 9m) with a gently sloping sandy bottom. It’s an excellent site for beginners and courses, known for its diverse hard corals and abundant reef fish, including moray eels, barracudas, and clownfish. Keep an eye out for nudibranchs!
Sea Turtle Divers, 82220 Phang Nga
Honeymoon Bay (★4.2)

Honeymoon Bay (★4.2)

Totally shallow dive site if you stay on the island. Afterwards it is a steep sloping reef down to 30m depth. There can be a current. The shallow area is good for snorkeling, training courses, and night dives.
Sea Turtle Divers, 82220 Phang Nga
Tuna Wreck (★4.2)

Tuna Wreck (★4.2)

The Tuna wreck, which was sunk in 2003 by the Thai government to create an additional artificial reef, is located off island No. 5.
Sea Turtle Divers, 82220 Phang Nga
Barracuda Point/Batfish Bend (★4.1)

Barracuda Point/Batfish Bend (★4.1)

This is a reef dive at the southern tip of Similan Island 5. There may be some current, making this a drift dive. This dive goes between rocks and also come to a small overhang.
Sea Turtle Divers, 82220 Phang Nga
Hideaway Bay (★4.2)

Hideaway Bay (★4.2)

The reef starts at 5 meters with a gentle slope with many hard corals which can be found at about 15-20 meters. There are many moray eels, chances to see leopard sharks, white tip reef sharks, napoleons etc.
Polphut B. (#4421034)
Monuments/Zodiak (★4.2)

Monuments/Zodiak (★4.2)

Monuments, Similan Islands’ Hideaway Bay, is a shallow, sandy dive site with unique underwater statues, including Thai Zodiac figures and tsunami memorials. Perfect for night dives, it offers diverse macro life such as ghost pipefish, various shrimp, octopus, and crabs. Suitable for all diver skill levels.
Hobo-Ya Similan, 83120 Phuket
Anita’s Reef (★4.1)

Anita’s Reef (★4.1)

A soothing dive site on the east side of islands 5 and 6 in the Similan Islands. This site is a rolling reef slope along the edge of the island from a shallow depth of 5-6m to around 25m.
Sea Turtle Divers, 82220 Phang Nga
Princess Bay (★4.3)

Princess Bay (★4.3)

Princess Bay is an easy bay dive. The reef edge is very beautiful. This site is good for beginners, courses, and snorkelers. This is a slightly sloping reef with a max depth of approx. 20m.
Mares
Sea Chart Wreck (★3.8)

Sea Chart Wreck (★3.8)

The Sea Chart wreck, off Khao Lak in Phang Nga, is an 84m cargo ship at 40m deep (shallowest 24m). This advanced wreck dive is largely intact, covered in soft corals. It teems with lionfish, batfish, snapper, huge schools of barracuda, and occasional whale sharks. Currents can be strong.
Sea Turtle Divers, 82220 Phang Nga
Stonehenge (★4.3)

Stonehenge (★4.3)

This dive site is located at the northernmost tip of island 4. Many big rocks (boulders) where you can dive in between. Please note that there is almost always a current running at this dive site.
Merlin Divers Co., Ltd., 83150 Phuket
South of Eden/Screaming Rocks (★4.2)

South of Eden/Screaming Rocks (★4.2)

South of Eden in the Similan Islands is a stunning dive site with a vibrant coral garden sloping down to a sandy bottom. Expect large granite boulders, swim-throughs, and an abundance of marine life including reef sharks, barracuda, fusiliers, and macro critters. Strong currents can be present.
Sea Turtle Divers, 82220 Phang Nga
West of Eden (★4.3)

West of Eden (★4.3)

A topographic dive site on the west side of Island 7 in the Similan Islands. It is centered around three huge rocks that are the highlight of the dive with coral slopes on either side. Soft corals, such as sea fans and sea hawks, are growing in the wall and in the deep area off the rocky coast. These areas are home to hard corals such as Hanaya rhinoceros and a wide variety of other creatures.
Sea Turtle Divers, 82220 Phang Nga
East of Eden (★4.3)

East of Eden (★4.3)

East of Eden is on the east side of island 7. This dive site was closed by the administration of the national park to be able to regenerate. Very beautiful coral landscapes are found here. Check from time to time to see when the dive site will be opened again.
Hobo-Ya Similan, 83120 Phuket
Deep Six (★4.2)

Deep Six (★4.2)

Located at the north end of the 7th island in the Similan Islands, this dive site is along the northern apex of an elongated island from north to south. Visibility is clear and the granite boulders, eroded by the tidal currents, form several steps from the bottom.
Hobo-Ya Similan, 83120 Phuket
Elephant Head Rock (★4.4)

Elephant Head Rock (★4.4)

Located in the middle of the sea between islands 7 and 8 in the Similan Islands, this reef dive site stands out in the middle of the sea. It was named after the shape of the rock sticking out of the water, which resembles the head of an elephant. The point is made up of huge layers of granite, dotted with numerous channels and swim-throughs that create a mystical landscape. The tide is good, and you can expect the feeding scene of the crabs, sharks and big fish in the early morning. In the shallow water, you can often find oversized trevally targeting small fish. This is one of the most dynamic dive sites in the Similan Islands.
Mares
Monkey Rock (★4.1)

Monkey Rock (★4.1)

Monkey Rock, Similan Islands, is a sloping reef with a mix of hard and soft corals, huge granite boulders, and intriguing swim-throughs. Marine life includes reef sharks, barracuda, fusiliers, snappers, and a good variety of macro critters. Currents can range from mild to strong.
Mares, Janez Kranjc
Beacon Point (★4.1)

Beacon Point (★4.1)

Beacon Rock in the Similan Islands is a dive site characterized by massive granite boulders forming dramatic swim-throughs and canyons. It boasts a mix of hard and soft corals. Expect to see reef sharks, barracuda, fusiliers, snappers, and a variety of macro life. Currents can vary.
Merlin Divers Co., Ltd., 83150 Phuket
Beacon Bay (★3.9)

Beacon Bay (★3.9)

Popular dive site, especially for night dives. It features a sloping reef, dropping from 5m to 35m+, with predominately hard corals. A notable highlight is the “Atlantis X“ wreck, a sunken liveaboard resting on the reef slope. Visibility is generally good, and currents are mild to moderate, suitable for all levels
Aqualung
Tor 13 (★4.0)

Tor 13 (★4.0)

Koh Bon is just off Similian Island near Khao Lak. The water is clear and warm. However, every now and then a cold current can come up and be fairly strong so take caution. The reef is beautiful and full of colorful marine life.
Merlin Divers Co., Ltd., 83150 Phuket
Fantasy Reef (★4.3)

Fantasy Reef (★4.3)

Fantasy Reef, Similan Islands, is a sloping reef with extensive coverage of vibrant hard and soft corals. It features large granite boulders and intriguing swim-throughs, creating a dynamic and visually stunning underwater landscape. Currents can be moderate to strong, offering exciting drift opportunities.
Miguel B. (#3409552)
Similan Islands (★4.3)

Similan Islands (★4.3)

They boast vibrant coral reefs, with diverse marine life, including colorful fish, majestic rays, and curious sea turtles. With crystal-clear waters and excellent visibility, it’s a haven for scuba divers seeking awe-inspiring underwater landscapes and unforgettable encounters with marine creatures.
Merlin Divers Co., Ltd., 83150 Phuket
Beacon Reef (★4.3)

Beacon Reef (★4.3)

Popular dive site, especially for night dives. It features a sloping reef, dropping from 5m to 35m+, with predominately hard corals. A notable highlight is the “Atlantis X“ wreck, a sunken liveaboard resting on the reef slope. Visibility is generally good, and currents are mild to moderate