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West Of Eden is a dive on the west side of Similan Island 7, also called Ko Pa-Yu, in Thailand. It is a typical western Similan site of giant granite boulders that form dramatic channels, canyons and overhangs. Depths run from 5 to about 30 metres, and some descriptions give up to 35 metres. The site begins in a sheltered bay at 12 metres, then descends through the boulder channels to a steep wall of sea fans and soft corals, and on to a massive sloping boulder covered in hard and soft coral gardens.
Angelfish, triggerfish and parrotfish live on the reef, and smashing mantis shrimp and rock mover wrasse are found in the rubble slopes. Hard coral bommies along the wall carry schools of fusiliers, while dogtooth tuna and trevally patrol the blue. Turtles often rest in the shallower areas around 18 metres. Lobsters are plentiful, with red fire gobies, cowrie shells and stonefish among the other finds. Listen for the creaking boulder, an eerie sound underwater.
Currents run from weak to strong, and cold upwellings of 23 to 24°C can cut the visibility. Check with the boat captain about the current before the dive.
Confirmed by our research team, reported by independent divers, or observed nearby via iNaturalist — each entry is labelled with its source.
Sea turtleSea turtleConfirmed present · 2 independent sources
Moray eelMoray eelReported here · unconfirmed
LobsterLobsterReported here · unconfirmed
Reef sharkReef sharkReported here · unconfirmed
ButterflyfishButterflyfishReported here · unconfirmed
Ghost pipefishGhost pipefishReported here · unconfirmed
TriggerfishTriggerfishReported here · unconfirmed
Manta rayManta rayConfirmed present · 3 independent sources
SweetlipsSweetlipsReported here · unconfirmed
Ornate ghost pipefishOrnate ghost pipefishReported here · unconfirmed
NudibranchNudibranchReported here · unconfirmed
TrevallyTrevallyConfirmed present · 3 independent sources
FrogfishFrogfishConfirmed present · 2 independent sources
Whale SharkRhincodon typusConfirmed present · 2 independent sources
Blue DragonPteraeolidia semperiReported here · unconfirmed
Ocellate PhyllidiaPhyllidia ocellataReported here · unconfirmed
Redlip ParrotfishScarus rubroviolaceusReported here · unconfirmed
ParrotfishParrotfishReported here · unconfirmed
Mantis shrimpMantis shrimpConfirmed present · 2 independent sources
WrasseWrasseConfirmed present · 2 independent sources
FusilierFusilierConfirmed present · 2 independent sources
Leopard / zebra sharkLeopard / zebra sharkReported here · unconfirmed
BarracudaBarracudaReported here · unconfirmed
Napoleon (humphead) wrasseNapoleon (humphead) wrasseReported here · unconfirmed
Jolly Green GiantMiamira sinuataReported here · unconfirmed
Powder Blue TangAcanthurus leucosternonReported here · unconfirmed
Moorish IdolZanclus cornutusReported here · unconfirmed
Giant MorayGymnothorax javanicusReported here · unconfirmed
BatfishBatfishReported here · unconfirmed
StonefishStonefishReported here · unconfirmed
AngelfishAngelfishConfirmed present · 2 independent sources
TunaTunaConfirmed present · 2 independent sources
SnapperSnapperReported here · unconfirmedDurable tips from divers — access, hazards, marine life, facilities. For day-of conditions, use the report tool in the conditions card above.
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