A pinnacle off Koh Nang Yuan that runs from 10 m at the top to 40 m at the base, which effectively makes it two dives on one piece of rock. Entry-level divers stay on the shallow structure; divers with deep training get the rest of it. White-eyed moray eels, nudibranchs and bluespot ribbontail rays are all found here, along with the usual reef fish.
Where it is and how deep
10.1164° N, 99.8105° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.
The dive
The decision on this site is made before the descent. The pinnacle runs from 10 m down to 40 m, and how much of it you see depends entirely on your training: an entry-level diver can spend a full dive on the top of the rock and never feel short of things to look at, while the lower structure is deep-dive territory with the short bottom time and hard turn-around that implies. Groups drop on the shallow end and work down one side of the rock rather than descending straight to the base.
The life is the local set rather than anything exotic: white-eyed moray eels in the cracks, nudibranchs on the rock for anyone moving slowly, bluespot ribbontail rays on the sand and tropical reef fish across the whole structure. Because the shallow part of the pinnacle carries as much of that as the deep part, the sensible profile is a short look at depth followed by a long, slow ascent up the rock, finishing the dive at 10 m with plenty of gas in hand for the safety stop.
Marine life and season
- Nudibranchs
- Stingrays
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Good | Good | Prime | Prime | Prime | Good | Good | Good | Good | Fair | Fair | Good |
Season follows Koh Tao: No official closure; whale shark sightings peak March-May and September-October, while October-November bring more rain and surface chop.
Know before you go
- The base sits at 40 m, deeper than a recreational no-stop profile allows for long: set a maximum depth and a turn pressure before the descent, and treat the deep leg as a single pass.
Questions divers ask
Is No Name Pinnacle suitable for beginners?+
Entry-level divers can dive it, but only on the shallow part of the pinnacle. The rock runs to 40 m and the site is described as one that divers with deep-dive training get the most out of.
Sources
- No Name Pinnacle - Scubago — Scubago
More dive sites in Koh Tao
Offshore granite tower where barracuda and jacks school in the blue
Drift
Drift over the Nang Yuan rock, with 40 m a short swim west
Reef
Sheltered fringing reef, sandy bottom at 12 m
Pinnacle
Coral-covered pinnacles beside the Sattakut, 7 m to 22 m
44.9 m navy attack craft, mast at 13 m, seabed at 23 m
Upright navy wreck, superstructure at 18 m, keel at 30 m
Reef
Calm reef in the lee of Koh Nang Yuan, 2 to 16 m
Artificial reef
Sunken jeep and scrap at 10 to 12 m, colonised by reef fish
Similar dives elsewhere
Boulder field from 24 to 36 m with near-constant current
A pinnacle dropping past 40 m with large schooling fish
Pinnacle
Hon Trau Nam
Whale Island & Van Phong Bay · Vietnam
Rays resting in the caves under three island peaks
Large schools of barracuda on an exposed pinnacle in strong current