Coral Reef Diagnostics

Bonaire - Between Pink Beach and White Slave

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05
Photo: Anderson Mayfield/Coral Reef Diagnostics
Country
Survey date(s)
2017-02-20
Coordinates
12.0603, -68.2813
Published dive-site position.
Coral cover
8.6%
Claude computer vision (34 edited photos) · other methods below · median 5.4%
Observations
None tagged; see Stressors below
Heat stress
Most recent heat load record
26 Oct 2026 · Bleaching Warning
5-year thermal stress load
5-year mean max. degree heating weeks (DHW)
2021–2025
NOAA Coral Reef Watch — Aruba, Curacao, and Bonaire virtual station
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 infoAruba, Curacao, and Bonaire (NOAA CRW virtual station)
Photographs
40
6 shown on this page
Site summary
Read this summary in:

This stretch of Bonaire's southwest coast is a patch reef bristling with sea rods, whips, and other soft corals, grading into a broad sand apron where garden eels poke out of the sand. A small turtle, two small reef squid, and schooling surgeonfish add to the scene, with scattered brain and boulder corals and no sign of widespread bleaching.

Max. depth dived
35.7 m
Water temp. during survey
26.4°Cii
-1.5°C vs the 2017 mean sea temperature (27.9°C)
ii From 1 logged dive at this site.
Bottom time
50 min
in at 15:53

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

Four other CRD dive sites with their own pages within 5 km shown in orange — click a marker to open its page.

Site description

General benthic features

The photographs show a strongly octocoral-dominated patch reef grading into a broad sand apron (e.g., Image 5).

Dense sea rods, whips, and other soft corals create much of the visible vertical structure, while scattered massive and brain corals, sponges, and low coral outcrops occupy consolidated patches (e.g., Image 1, Image 2, Image 3).

Coral cover

Stressors

No widespread hard coral bleaching pattern is visible. Most photographed corals and octocorals retain plausible natural pigmentation, although color alone cannot establish octocoral tissue condition. One frame shows a mat of what Anderson identified as anemone polyps ringing and partly overtopping a recently dead brain-type colony (clean, bare white skeleton with no turf; cause not stated) (e.g., Image 6).

Sand and open hardground are common, but the photographs do not show a site-wide acute tissue-loss event. These are qualitative observations only. No corallivores were evident.

Fish and other fauna

Garden eels occur in the sand, and a small turtle, two small Caribbean reef squid, and schooling surgeonfishes add conspicuous fauna (e.g., Image 4).

Comparisons with other data

The XL Catlin Seaview Survey covered a nearby station (transect 17041) in 2013, 0.29 km from the pin. Within 5 km, three XL Catlin Seaview Survey stations recorded station-year means of 12–14% hard coral cover in 2013; the nearest, XL Catlin Seaview Survey at transect 17041, 0.29 km away, read 14% in 2013.

Other notes

The image set samples several habitat components rather than a single uniform reef surface.

CV model comparison

Mean 8.6%, median 5.4% across 34 photos.
More infoA few colony-focused photos raise the mean; the median is the typical photo. No computer-vision method yet estimates coral cover accurately on new images, so treat this as indicative rather than a measurement; it is revised as the methods improve.
Headline: Claude computer vision, a blind point count of this site's own photographs.
More infoOther rows are for comparison only and are never averaged. No diver transect exists for these photos, so agreement between rows is not accuracy.
MethodHard coral cover (%)Photos (n) ± SE
CoralSCOP edited22.3n = 38 · SE 2.5
Claude (edited photos)8.6n = 34 · SE 2.9

CoralSCOP (edited photos) reads 22.3%, 13.7 pp above Claude's blind point count (8.6%); the headline stays Claude's blind point count because no transect or manual count exists here.

Independent surveys nearby

Within 5 km, 3 independent survey stations recorded hard coral cover in 2013. The most recent nearby survey is from 2013, so these values predate recent heat stress. This site's own estimate (8.6%) sits 5.4 points below the one survey station up to 2 km away (14%), inside the 7-point method-noise floor (inconclusive); the methods differ, so the comparison is context, not a like-for-like test.

Collected by other programs using different methods (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 cell shows either the range of its values or, as a single value, the mean of surveys made in one year. Station names are not dive-site names.

Independent survey data near this site
AgencySite / locationDateHard coral cover (%)DistanceLink
XL Catlin Seaview Surveytransect 17041201314%0.29 kmdoi:10.14264/uql.2019.930
XL Catlin Seaview Surveytransect 17040201312%2.91 kmdoi:10.14264/uql.2019.930
XL Catlin Seaview Surveytransect 17042201313%3.64 kmdoi:10.14264/uql.2019.930

Data & links

All images from Coral Reef Diagnostics. Data are from Coral Reef Diagnostics and the organizations named in the data sources above.

© Coral Reef Diagnostics.