Coral Reef Diagnostics

Saudi Red Sea - unnamed site 2 (Al Qunfudah)

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05
Photo: Anderson Mayfield/Coral Reef Diagnostics
Survey date(s)
2024-08-30
Coordinates
19.1035, 40.6635
Approximate position.
Coral cover
17%
Published point count (Mayfield 2025; CoralNet-assisted, 80 photos) · details below
Coral bleached
18%
of coral tissue · Mayfield (2025), Environments 12:248
Heat stress
Most recent heat load record
26 Oct 2026 · Alert Level 2
5-year thermal stress load
5-year mean max. degree heating weeks (DHW)
2021–2025
NOAA Coral Reef Watch — Al Madinah and Makkah 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 infoAl Madinah and Makkah (NOAA CRW virtual station)
Photographs
86
12 shown on this page
Site summary
Read this summary in:

An Al Qunfudah reef with more standing structure than its neighbor, including waist-high candelabra Acropora a couple of meters across and staghorn thickets over tiers of plating corals. Condition is the story, with much of the branching framework stark white or bone-pale and about 18% of coral tissue bleached under heavy heat stress in August 2024.

Water temp. during survey
31.5°Cii
+0.8°C vs the 2024 mean sea temperature (30.7°C)
ii Published dive temperature (Mayfield 2025, Environments 12:248, Appendix A).

One other CRD dive site with its own page within 5 km shown in orange — click a marker to open its page.

9 of the 12 photographs on this page are shown beside the text that discusses them under "Site description" below.

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Photo credit & attribution

Site description

General benthic features

This one has more standing structure: elegant branching and arborescent Acropora colonies stand clear of the substrate, one of them a broad, waist-high candelabra a couple of meters across and stands of thinner staghorn thickets run along the reef top (e.g., Image 1, Image 2).

Beneath and around them the pavement is a dense mosaic of plating and foliose colonies stacked in overlapping tiers, low domes, red and purple encrusting sponges, and crustose coralline algae, with the reef top falling away as a steep terraced slope studded with table colonies into blue water (e.g., Image 3, Image 4).

Coral cover

Stressors

The condition is the story: much of the branching framework in the frame is stark white or bone-pale, plating colonies show blanched leading edges, and the bright tan-and-cream corals stand in sharp contrast to those still fully pigmented. Two of Anderson's frames show a crown-of-thorns starfish on this reef (e.g., Image 7).

Fish and other fauna

Snapper and small damselfish move over the top. A mushroom coral (Fungia, Anderson's identification) sits loose on the rubble (e.g., Image 8), and the photographs also record barracuda (e.g., Image 10) and giant clams (e.g., Image 11, Image 12).

Comparisons with other data

Apart from our own published survey shown here, we found no other surveys at this site as of 2026. If you would like to share yours, please email us.

Dive record

A second unnamed Al Qunfudah reef nearby, surveyed the same day, 30 August 2024, with Al Qunfudah Diver; the map marker is offset slightly so both sites show, and its position is approximate.

CV model comparison

Computer-vision estimates from this site's own photographs are listed in the comparison table below, alongside the headline rather than merged into it.
Headline is the reference value; every other row is listed beside it for comparison and none is averaged in.
More infoThe reference is this dive site's own published CoralNet point count by the author (Mayfield 2025, Environments 12:248, Appendix A; most frames annotated by CoralNet's AI, trained and checked by the author). The computer-vision rows are this site's own values: Claude is a blind point count of all of the site's edited photographs, and CoralSCOP is the site's finished survey of its edited photographs. They are on different frame sets from the published count, a row under 30 frames is indicative only, and no computer-vision method yet estimates coral cover accurately on new images.
MethodHard coral cover (%)Photos (n) ± SE
Published point count (CoralNet-assisted)16.6
CoralSCOP edited24.4n = 70
Claude (edited photos)11.2n = 86 · SE 1.6

The two computer-vision methods disagree by 13.2 pp (11.2–24.4%) and read on both sides of the published point count (16.6%); the headline is the published point count because it is the site's published value (CoralNet-assisted: most frames were annotated by CoralNet's AI, trained and checked by the author).

Data & links

All images from Coral Reef Diagnostics. Data are from Coral Reef Diagnostics.

© Coral Reef Diagnostics.