Coral Reef Diagnostics

Maldives - Ghuli Faru

Reef Check Foundation
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05
Photo: Anderson Mayfield/Coral Reef Diagnostics
Country
Survey date(s)
2017-05-17
Coordinates
3.9904, 73.5095
Coral cover
12%
Computer vision (18 photos) · details below
Observations
not yet tagged for this site
Heat stress
Today’s heat load
16 Sep 2026 · Bleaching Watch
5-year thermal stress load
5-year mean max. degree heating weeks (DHW)
2021–2025
NOAA Coral Reef Watch — Maldives 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 infoMaldives (NOAA CRW virtual station) · Maldives ecoregion mean=2.9°C-heating weeks
Photographs
23
Site summary

A fast, plankton-thick drift dive better known for its wildlife than its coral - a coffee-table-sized bumphead parrotfish, a Napoleon wrasse, spotted eagle rays, and a river of snappers, all in poor visibility. Coral cover here is modest, with computer vision estimating around 11.5%.

Max. depth dived
29.6 m
dive-log maximum

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

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

7 of these 23 photographs are shown beside the text that discusses them under "Site description" below.

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Photo credit & attribution

Site description

Setting

The water at Ghuli Faru was thick with plankton and moving like a freight train — one photo shows a diver pinned flat, bubbles streaming sideways — and that soup is exactly why the big animals came.

General benthic features

Between fly-bys, whip corals leaned hard into the current beside an unfurled black crinoid, and a blotchy map-type puffer sat out the chaos wedged among the corals (e.g., Image 24).

Coral cover

Coral cover: 12% — photo-derived, and the two methods broadly agree (10% vs 13%). This site's figure is the mean of two independent computer vision passes over Anderson's own frames: a DINOv3 calibrated point classifier reads 10.3% and a CoralSCOP computer vision reads 12.7%, a spread of 2.4 percentage points. The map publishes the mean so sites can be sorted against one another, but the honest statement of what is known here is the 10–13% range: the two products have different denominators and should not be treated as one measurement.

Stressors

No crown-of-thorns starfish (COTS) or other corallivores evident.

Fish and other fauna

Out of the violet haze loomed the dive's monster: a bumphead parrotfish the size of a coffee table, photographed bulldozing the rubble and then point-blank, flank filling the frame (e.g., Image 6, Image 15).

A Napoleon wrasse ghosted past twice, once trailing an entourage of jacks; spotted eagle rays sailed by on the edge of visibility; and a golden river of bluestripe-type snappers ran along the reef (e.g., Image 2, Image 9, Image 12, Image 17).

Comparisons with other data

A published figure above about 70% usually reflects the surveyors choosing the most coral-rich part of the reef, so read it as a best-patch number rather than a site mean.

Dive record

Twenty-eight minutes, barely any visibility — and one of the fishiest dives of the trip.

CV model comparison

DINOv3 10%, CoralSCOP 13%; the headline is their mean.
More infoAs of September 2026 no computer-vision method estimates coral cover accurately on new images, so treat this as indicative rather than a measurement; it is revised as the methods improve.
The two methods broadly agree (spread 2.4 pp).
More infoThe published figure is the mean of the two methods.
MethodHard-coral cover (%)
In-house DINOv310.3
CoralSCOP12.7
Mean (± SD)11.5 ± 1.7
Range10.3–12.7

Mean ± SD and range are across the computer-vision methods shown.

Independent surveys nearby

Data availability near this site
Agency / programYear(s)Stations / distanceLink
Montefalcone et al. (2020)20151 station, 1.16 kmRecords ↓
Reef Check20221 station, 0.98 kmRecords ↓
XL Catlin Seaview Survey20171 station, 5.00 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%20%40%60%80%201520182022Montefalcone et al. (2020) 2015: 76%XL Catlin Seaview Survey 2017: 5.5%Reef Check 2022: 19%Dr. Coral (CRD) 2017: 12%Year-averaged across all programs: no detectable trend (-6.11 pp per year, not separable from zero; 3 years)
Montefalcone et al. (2020) XL Catlin Seaview Survey Reef Check Dr. Coral (CRD)Year-average (no detectable trend)

Within 5 km, 3 independent survey stations recorded hard coral cover in 3 records between 2015 and 2022. One survey since 2021 recorded 19%. This site's own estimate (12%) sits 7.9 points below the recent value (19%); the methods differ, so the comparison is context, not a like-for-like test.

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. Values marked best patch exceed 70%: surveyors usually chose the richest area, so they are not site means.

Independent survey data near this site
AgencySite / locationDateHard coral cover (%)DistanceLink
Montefalcone et al. (2020)Cocoa Corner201576% best patch1.16 kmHeatCRD database
XL Catlin Seaview Surveytransect 3703520175.5%5.00 km—
Reef CheckGulhi Island Backreef202219%0.98 km—

Data & links

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

© Coral Reef Diagnostics.