
Lembeh Strait · Indonesia · Reef · Sand slope
Nudi Retreat
A shallow coral bowl between two soft-coral mini walls
Area photo: Bernard DUPONT · CC BY-SA 2.0
One of the few Lembeh sites where the structure matters as much as the sand, and it is named for the variety of nudibranchs found on it. A coral bowl in the shallows drops into a sandy slope studded with encrusted boulders, with two mini walls running out to either side and soft coral growing up to within 2 m of the surface. The slope runs down to 28 m.
Where it is and how deep
1.4815° N, 125.2371° EPublished position for this site.
The dive
The boat drops you over the shallow end, where a coral bowl sits in the first few metres and soft coral grows right up to 2 m depth. From there the bottom turns into a sandy slope with encrusted boulders scattered across it, and two mini walls run out to either side of the bowl. The maximum depth on the site is 28 m, so the usual pattern is to work the slope early and come back up into the bowl for the last stretch.
The boulders and the soft coral are what to search rather than open sand: dragon sea moths, boxer crabs and pygmy seahorses are the common finds, and the anemones growing on the walls hold their own anemonefish. Blue-ringed octopus and juvenile flamboyant cuttlefish are both recorded here as well, so what the guide is hunting for changes from day to day. The nudibranchs the site is named for are spread across the coral rather than gathered in one patch.
Conditions decide what kind of dive this is. With good visibility and enough current running to open the soft corals, the mini walls hold up as a wide-angle dive; without it the site falls back to close work on the boulders and the slope. Either way the shallow bowl is the easiest place to spend the end of the dive, since the growth there sits well inside safety-stop depth.
Marine life and season
- Pygmy seahorses
- Octopus & cuttlefish
- Nudibranchs
- Macro critters
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Good | Good | Good | Good | Prime | Prime | Prime | Prime | Prime | Prime | Good | Good |
Season follows Lembeh Strait: Diveable year-round; May–October dry season brings marginally clearer water for photography.
Know before you go
- Visibility and current set the dive here: the soft corals only open with some water moving, and without it the wide-angle plan is worth swapping for close macro work on the boulders.
Sources
- Nudi Retreat dive site | PADI — PADI
- Lembeh Strait Dive Sites — Dive The World
More dive sites in Lembeh Strait
Pinnacle
A swim-through at 22 to 25 m lined with crinoids
Muck & macro
Sand, rubble and algae on a point that pulls in nutrient-rich water
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Zebra crabs sheltering in the spines of purple heart urchins
Wreck
A 60 m wartime cargo hull on its side under crinoids
Sea fans on the mini-wall hold pygmy seahorses
Muck & macro
The strait's only white-sand muck site, with coral in the shallows
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Banggai cardinalfish in the hundreds under a night torch
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Blue-ringed, coconut and mimic octopus on one black sand slope
Similar dives elsewhere
Panglao's critter slope, five minutes off Alona Beach
Ghost pipefish and pygmy seahorses on a calm coral slope
Sleeping turtles at low tide on the west-coast slope
Resident turtles around an old wooden boat wreck



