A remote oceanic atoll in the Spratly Islands of the South China Sea, roughly 300 km northwest of Kota Kinabalu, Sabah, ringed by sheer walls that drop into 2,000 m of blue water and famous for the schools of scalloped hammerhead sharks that gather to breed each April and May. NOTE: the island's only resort had its operating licence revoked in January 2025 and is currently closed — there is no commercial dive access at present.
Destination info
Conditions, highlights, and the resident marine life.
Conditions
Water and air temperature across the year.
WaterAirDryShoulderWet
Description
Layang-Layang (Swallow Reef / Pulau Layang-Layang) is an isolated oceanic atoll about 7 km long and 2 km wide in the disputed Spratly Islands, administered by Malaysia and roughly 278–300 km northwest of Kota Kinabalu in Sabah. Surrounded by deep ocean rather than continental shelf, its reef wall plunges almost vertically from the surface to depths approaching 2,000 m, producing crystalline visibility (often 20–40 m and exceptionally up to 50–60 m) and steady pelagic action. The atoll's signature draw is the schooling scalloped hammerhead shark (Sphyrna lewini): hundreds aggregate in the deep blue water off the walls to breed during April and May, the peak of the dive season. Historically the only way in was a chartered light aircraft from Kota Kinabalu (~80 minutes) to the atoll's airstrip, with diving run by the single on-island resort; sites were reached by short catamaran transfers (about 5–25 minutes) and the resort also offered limited house-reef diving. Water temperatures sit in the high 20s°C (around 26–30°C). IMPORTANT — CURRENT STATUS: the resort had been shut since 2022 (COVID-era), and on 6 January 2025 Malaysia's Ministry of Tourism, Arts and Culture revoked the operator's licence under the Tourism Industry Act 1992 following complaints that deposits were not refunded; as of mid-2026 the resort remains closed with no announced reopening, so there is no operating dive base, airstrip access, or commercial diving at the atoll. The dive-site information below reflects the historical March–August season when the resort operated.
Highlights
What makes this dive worth the trip.
Schools of scalloped hammerhead sharks — sometimes hundreds strong — aggregate to breed in the deep water off the atoll's walls during April and May, the peak of the dive season; D's Wall and Gorgonian Forest are the most reliable spots for sightings.
Because the atoll sits in open ocean with no continental shelf, its reef wall drops almost vertically from the surface to depths approaching 2,000 m, giving Layang-Layang its dramatic wall diving and exceptional visibility.
Visibility is consistently excellent — typically 20–40 m from March to May and on occasion as clear as 50–60 m — with water temperatures in the high 20s°C (around 26–30°C).
Marine life
44 species you’re likely to encounter on a dive here.
Dive sites
7 signature sites at this destination.
Wreck Point
Despite the name there is no wreck here — it is a coral garden and wall combining a shallow hard-coral shelf (around 7–8 m, suitable even for snorkelling) with a steep slope dropping toward deep water. Below about 20 m the wall carries barrel sponges, gorgonian fans and sea whips. Marine life ranges from razorfish, indigo anthias, bigeye trevally and barracuda on the shallows to whitetip reef sharks, dogtooth tuna, humphead (bumphead) parrotfish and occasional manta rays along the drop-off.
7–40 mintermediateDay boatLightVisibility 10–40 m
The Valley
A gentle coral slope (around 10–15 m) of large hard-coral formations riddled with overhangs, crevices and sandy patches, on the more sheltered side of the atoll. A calmer, scenic dive home to groupers, sweetlips, snappers, surgeonfish, fusiliers and barracuda, with garden eels and ribbon eels in the sand, green and hawksbill turtles over the reef, and reef sharks and the occasional hammerhead passing the edge of the slope.
5–25 mintermediateDay boatLightVisibility 15–40 m
Dogtooth Lair
Named for the schools of large dogtooth tuna (often over a metre) that cruise the drop-off, this site runs along a sloping sandbank of acropora fields with yellow gorgonians from about 20 m down before the wall plunges toward the abyss. Beyond the tuna, divers encounter pickhandle barracuda, bluefin trevally, whitetip reef sharks, stingrays, turtles and — in season — passing hammerheads.
5–40 madvancedDay boatModerateVisibility 20–50 m
D's Wall
Layang-Layang's signature wall dive, a vertical free-fall face that begins barely a metre below the surface and drops sheer toward the 2,000 m abyss. Divers hang in the blue alongside the wall watching for grey reef and whitetip reef sharks, schooling jacks and barracuda, and — in April and May — passing scalloped hammerheads and the occasional manta ray. Black coral, sea fans and giant barrel sponges cover the wall, with overhangs and a shelf around 40 m.
1–40 madvancedDay boatModerateVisibility 20–50 m
Gorgonian Forest
Considered Layang-Layang's signature dive and one of the two best hammerhead spots on the atoll. A gentle slope of bottlebrush and warty corals leads to a main wall around 12 m, below which dense yellow and orange gorgonian sea fans cloak the drop-off from about 22 m down. Strong currents sweep the corner and draw in big fish: scalloped hammerheads (especially April–May), schooling fusiliers and trevally, dogtooth tuna, groupers and hawksbill turtles.
12–40 madvancedDay boatStrongVisibility 20–50 m
Shark's Cave
A near-vertical wall with two large sandy ledges and a small cave where whitetip reef sharks rest by day. The upper ledge sits around 30 m and the larger lower ledge can be penetrated a few metres into the cave; purple sea fans, giant barrel sponges and black coral bushes line the wall, sheltering frogfish. Schooling jacks, giant trevally and dogtooth tuna patrol beyond the drop-off, with grey reef sharks, hammerheads, manta rays and eagle rays passing in the blue.
25–40 madvancedDay boatModerateVisibility 20–50 m
Navigator's Lane
A coral-rich drop-off where the reef is so densely covered that there is nowhere to set a hand down without touching living coral. The blue-water edge produces regular sightings of schooling scalloped hammerheads and other pelagics, while the shallower reef holds hard and soft corals, sea fans and sea whips, nudibranchs, and commensal anemone shrimp. Eagle rays and manta rays are also seen here.
5–30 mintermediateDay boatModerateVisibility 20–50 m
Where to dive & stay
Local dive centers, resorts, and hotels.
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