Indonesia - Halmahera W (Ternate/Tidore strait)
Part of the regional summaries: Indonesia - Halmahera and Indonesia - Maluku
2026-08-09
More info
North Maluku (NOAA CRW virtual station)One other CRD dive site within 5 km shown in orange — click a marker to open its page.
Site description
Setting
This site sits at 0.680, 127.420, in the strait between the volcanic islands of Ternate and Tidore off western Halmahera, North Maluku.
Coral cover
No coral-cover value exists for this site, and no survey sits close enough to describe it.
Stressors
Heat stress: five-year mean annual maximum of 5.1 degree-heating weeks (map satellite layer) - the lowest of any Indonesian area in this set. No crown-of-thorns starfish (COTS) or other corallivores evident.
Comparisons with other data
The regional record is eight surveys submitted via MERMAID within 10 km, spanning 2021-2024, ranging from 0.0% to 62.0% hard coral and averaging 27.8%; the nearest is Tunguwai at 5.80 km, 31.9% in 2024. A range that includes both zero and 62% inside a 10 km radius is the useful fact here: it rules out transferring any average onto this position.
Also on record for this site: At 5.8 km this is a description of the surrounding area, not of this reef — it should not be read as this site's cover, and the spread above shows how much reefs in this area differ from one another.
Other notes
A site account will follow when photographs or a closer survey are available.
Dive history
| Date | Time in | Max depth (m) | Bottom time (min) |
|---|---|---|---|
| 2026-08-08 | 19:15 | 21.0 | 47 |
| 2026-08-09 | 07:30 | 31.2 | 60 |
| 2026-08-09 | 11:00 | 28.3 | 60 |
| 2026-08-09 | 14:37 | 29.0 | 60 |
Data & links
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