reef
all-levelsboat entry

Mataking Island

Semporna · Sabah · Malaysia

Mataking Island is a privately managed diving paradise in the Celebes Sea, located approximately 40 minutes by boat east of Semporna in Sabah, Malaysian Borneo. Sitting within the same rich marine region as legendary Sipadan, this small island offers pristine reef diving, extraordinary turtle encounters, and one of the world's most unusual attractions: an underwater post office at 10 meters depth where divers can mail waterproof postcards to friends and family around the globe. The island is actually composed of two islets, Mataking Besar and Mataking Kecil, connected by a sandbar that emerges at low tide. The diving around both islands is varied and rewarding. The eastern shore features dramatic wall diving, with the reef edge dropping steeply from 5 meters to well beyond 30 meters into the deep blue of the Celebes Sea. These walls are adorned with sea fans, soft corals, and barrel sponges, and attract passing pelagics including blacktip reef sharks and schools of barracuda. The western and southern reefs slope more gently, creating ideal conditions for newer divers and underwater photographers. The coral coverage is excellent, with healthy table corals, massive Porites bommies, and intricate staghorn thickets providing habitat for an impressive diversity of reef fish. Giant clams dot the reef, their mantles displaying vivid blues, greens, and purples. Mandarin fish can be spotted at dusk in rubble areas near the jetty, performing their delicate mating dance. Turtles are the constant companions of diving at Mataking. Both green turtles and hawksbill turtles are resident around the island, and encounters occur on virtually every dive. The turtles have become accustomed to divers and often allow remarkably close approaches, making Mataking one of the best destinations in Sabah for turtle photography. The macro diving at Mataking is equally compelling. Frogfish hide among sponges, blue-ringed octopus emerge from rubble on night dives, nudibranchs of extraordinary variety crawl across the reef, and seahorses cling to gorgonian fans. The house reef accessible from shore provides excellent night diving, revealing a completely different cast of creatures after dark. With clear water, mild currents, and diving accessible to all certification levels, Mataking Island delivers a complete Borneo diving experience. Its proximity to Sipadan means many guests combine the two, enjoying Mataking's relaxed charm and rich reefs as a home base while making day trips to Sabah's most famous underwater attraction.

30 m
Max depth
20-30m
Visibility
April to December
Best season

Marine Life

green turtle
hawksbill turtle
blacktip reef shark
barracuda
bumphead parrotfish
blue-ringed octopus
mandarin fish
frogfish
nudibranch
clownfish
giant clam
seahorse

Best Season to Dive

Highlighted months represent the ideal conditions for diving

27°C – 30°C
Jan
Feb
Mar
Apr
May
Jun
Jul
Aug
Sep
Oct
Nov
Dec

Location

Semporna · Sabah · Malaysia

Coordinates: 4.5667, 118.9833

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Dive Site Depth Profile

Visual depth progression and waypoint route for Mataking Island

Max Depth:30m
Waypoints:5
0m0m5m5m10m10m15m15m20m20m25m25m30m30mSea SurfaceEntry2mReef section 118mDeepest point30mReef section 215mSafety stop5m
* Plot shows dive progression checkpoints sequentially from left to rightDiveOne Club Depth Profile v1.0

Why dive here

An underwater post office at 10 meters where you can mail waterproof postcards
Resident green and hawksbill turtles encountered on virtually every dive
Pristine wall diving on the eastern shore dropping to over 30 meters

Conditions & safety

Skill levelall-levels
Entry typeboat
Max depth30 m
Currentmild
Visibility20-30m
Best seasonApril to December
turtle divingwall diveprivate islandunderwater post officeCelebes Sea

FAQ

What is the underwater post office at Mataking Island?

Mataking Island is home to the world's only underwater post office, located at approximately 10 meters depth. Divers can purchase waterproof postcards from the resort, write their messages, and deposit them in the underwater post box during a dive. The postcards are collected, dried, stamped, and mailed through the regular postal service. It has become one of Sabah's most unique diving attractions.

How does Mataking compare to Sipadan for diving?

Mataking offers a more relaxed and intimate diving experience compared to the intense pelagic action at Sipadan. While you will not see the massive tornado of barracuda or dense shark populations of Sipadan, Mataking compensates with pristine house reefs, excellent macro life, resident turtles on every dive, and significantly fewer crowds. Many dive packages from Mataking include permitted dives at Sipadan as part of the itinerary.

How do I get to Mataking Island?

Mataking Island is located approximately 40 minutes by speedboat east of Semporna in Sabah, Malaysian Borneo. Semporna is accessible by road from Tawau, which has an airport with flights from Kota Kinabalu and Kuala Lumpur. The island has one resort, Mataking Reef Dive Resort, which operates transfers from Semporna and manages all diving operations around the island.

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