Sangeang & Bima Bay · Indonesia · Reef
Techno Reef
A lone coral bommie on the sand flat east of the volcano, ringed by bigeye trevally
Area photo: Bernard Picton · CC BY-SA 4.0
Techno Reef is a small coral bommie on the eastern side of Sangeang, the active volcano island off east Sumbawa. It is the structural counterpart to the muck slopes at Hot Rocks and Bontoh, and the cluster's best site for reef fish.
Also known as Tikno Reef.
Where it is and how deep
8.1959° S, 119.0698° EApproximate position — the dashed circle shows where the site lies; your operator's briefing has the mooring.
The dive
The dive centres on a single small coral bommie sitting at 12 m in a flat of sand. A resident school of bigeye trevally holds around it, batfish are seen more reliably here than anywhere else on a Sumbawa trip, and dogtooth tuna occasionally pass offshore. The site often runs as the last morning dive of a Sangeang day.
Marine life and season
- Trevally & jacks
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec |
|---|---|---|---|---|---|---|---|---|---|---|---|
| Fair | Fair | Fair | Good | Good | Prime | Prime | Prime | Prime | Prime | Good | Fair |
Season follows Sangeang & Bima Bay: April to November is the season and June to October the peak; in January and February most liveaboard operators do not run.
Sources
- Best Dive Sites in Sumbawa — Neptune Liveaboards
- Kalimaya Dive Resort | Volcano Diving | Sangean Volcano — Kalimaya Dive Resort
More dive sites in Sangeang & Bima Bay
Sunset and night muck dive on the volcano's western black sand
Muck & macro
Fumaroles stream volcanic gas bubbles straight up out of the black sand
Eagle rays and whitetip sharks cruising the edge of the drop-off
Similar dives elsewhere
Reef hook dive at 10-12 m in very strong current
Named for the barracuda school that met its first divers
A turtle point about 10 m under a shallow reef cliff
A coral slope below the Jesus statue with a resident turtle.