Reef Check Foundation
Coral Reef Diagnostics

Atauro - Watuwai

Coral Triangle Center (CTC)
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05
Survey date(s)
2024-01-29
Coordinates
-8.2318, 125.6123
Coral cover
not reported
Insufficient photos to estimate coral cover.
Observations
not yet tagged for this site
Heat stress
Today’s heat load
16 Sep 2026 · No heat stress
5-year thermal stress load
5-year mean max. degree heating weeks (DHW)
2021–2025
i 5-year mean max. DHW is the mean of the annual maximum DHWs over the five complete years named above, not conditions today.
More infoTimor-Leste (NOAA CRW virtual station) · Lesser Sunda ecoregion mean=6.9°C-heating weeks
Max. depth dived
32.6 m
Water temp. during survey
26.7°Cii
-2.3°C vs the 2024 mean sea temperature (29.0°C)
ii Dive-computer reading of 80°F, converted; reported to one decimal because the instrument resolved whole degrees Fahrenheit.

Twelve independent survey stations shown with the program’s logo — click one to see how far it is from this site.

Six other CRD dive sites within 5 km shown in orange — click a marker to open its page.

Site description

Setting

That frame is a wide view across a reef crest or upper slope in blue ambient light, with a heavy plankton load visible in the water column.

General benthic features

Living coral is close to continuous across the foreground and mid-ground: an interlocking carpet of tan digitate and corymbose Acropora thickets with pale branch tips, into which small rounded massive Porites-like heads are set — one prominent head mid-frame and a short chain of them to the right. The immediate foreground adds fleshy polyp-covered mounds, a dark crenulated mushroom coral (fungiid), pink crustose coralline crusts, and a low branching soft coral. No sand plain, transect tape, mooring, or other man-made object is in view.

Coral cover

No coral-cover value is published for this site yet, and a computer vision pass is still pending; nothing here is estimated from the photograph.

Stressors

A few broken white branches at lower right are the only clear physical damage; no bleaching pattern is apparent in this frame beyond normal Acropora tip whitening. No crown-of-thorns starfish (COTS) or other corallivores evident.

Fish and other fauna

Small planktivorous damselfishes and anthias hang above the thicket and one blue-bodied, yellow-tailed wrasse crosses the open blue.

Comparisons with other data

At 90 m the two positions effectively coincide, so it is very likely the same reef — but it remains another organization's survey on a different date, not a measurement of this dive. Also on record for this site: No characteristics from another Ataúro site have been transferred to this entry.

Dive record

Watuwai was dived once, on 29 January 2024 (lifetime dive 250): 50 minutes, 32.6 m maximum and 15.2 m average depth, minimum water temperature 26.7°C.

Other notes

The camera failed early in the dive, so exactly one photograph survives and this account is built from it alone. A single frame cannot support a site-wide habitat or cover characterization — it documents the photographed spot and nothing more.

Independent surveys nearby

Data availability near this site
Agency / programYear(s)Stations / distanceLink
Coral Triangle Center (CTC)20174 stations, 0.65–4.90 kmRecords ↓
Reef Check2004–20176 stations, 0.09–4.10 kmRecords ↓
XL Catlin Seaview Survey20142 stations, 0.61–2.48 kmRecords ↓
Hard coral cover over time — this site and every independent station within 5 km. Programs are shown separately because they use different methods at different stations; the lines are not one comparable series.
0%17%34%51%68%200420102017Reef Check 2004: 33%Reef Check 2017: 25%Reef Check 2017: 39%Reef Check 2017: 49%Reef Check 2017: 53%Reef Check 2017: 65%XL Catlin Seaview Survey 2014: 17%XL Catlin Seaview Survey 2014: 21%Coral Triangle Center (CTC) 2017: 36%Coral Triangle Center (CTC) 2017: 41%Coral Triangle Center (CTC) 2017: 47%Coral Triangle Center (CTC) 2017: 49%Year-averaged across all programs: no detectable trend (+0.37 pp per year, not separable from zero; 3 years)

Within 5 km, 12 independent survey stations recorded hard coral cover in 30 records between 2004 and 2017. The most recent nearby survey is from 2017, so these values predate recent heat stress.

Collected by other programs using different methods (Reef Check uses point-intercept transects; the XL Catlin Seaview Survey uses photo-transects with automated image annotation), so these are context for the figures above, not a like-for-like comparison. Where a station was surveyed more than once the range is shown. Station names are not dive-site names.

Show all 12 independent survey records
Independent survey data near this site
AgencySite / locationDateHard coral cover (%)DistanceLink
Reef CheckSouth of Tanjung Reta200433% (2 surveys)4.01 km—
XL Catlin Seaview Surveytransect 30015201421%0.61 km—
XL Catlin Seaview Surveytransect 30014201417%2.48 km—
Reef CheckRai keta tungu201765%0.09 km—
Coral Triangle Center (CTC)Beloi (10)201749% (8 surveys)0.65 kmCurrier K, Marine P, Welly M. 2017. Atauro Island MPA. MERMAID
Reef CheckWatu ai201749%0.74 km—
Reef CheckRai keta rala201739%0.74 km—
Reef CheckHaru ina201753% (2 surveys)1.39 km—
Coral Triangle Center (CTC)Outer Reef (09)201741% (7 surveys)1.46 kmCurrier K, Marine P, Welly M. 2017. Atauro Island MPA. MERMAID
Coral Triangle Center (CTC)Vila (11)201736% (2 surveys)2.23 kmCurrier K, Marine P, Welly M. 2017. Atauro Island MPA. MERMAID
Reef CheckVila South201725% (3 surveys)4.10 km—
Coral Triangle Center (CTC)Lampian (12)201747%4.90 kmCurrier K, Marine P, Welly M. 2017. Atauro Island MPA. MERMAID

Data & links

Data on this page are from the organizations named in the data-sources table above, not Coral Reef Diagnostics; Coral Reef Diagnostics has no survey of its own at this site.

© Coral Reef Diagnostics.