Coral Reef Diagnostics

Maldives - Baa Atoll site 8

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05
Photo: Anderson Mayfield/Coral Reef Diagnostics
Country
Survey date(s)
2016-01-23
Coordinates
5.2957, 72.9635
Coral cover
45%
Photo-based estimate, January 2016 (Claude visual estimate of 49 of Anderson's photographs of research site 8) · details below · median 45%
Observations
Heat stress
Most recent heat load record
26 Oct 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)
Photographs
49
35 shown on this page
Site summary
Read this summary in:

A January 2016 Baa Atoll research dive (site 8) on a high-relief reef front that tumbles from a coral-crowded crest into deep blue, with terraced table Acropora, staghorn thickets, and cauliflower Pocillopora; Anderson tagged and sampled colonies here roughly three months before the 2016 El Niño bleaching event.

Max. depth dived
11.1 m
sample-sheet maximum
Water temp. during survey
29.0°Cii
-0.2°C vs the 2016 mean sea temperature (29.2°C)
ii HOBO Pro logger reading at the site (Anderson's 2016 samples sheet), 29°C on 23 January 2016 (no CTD cast); not a dive-computer reading.

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

22 of the 35 photographs on this page are shown beside the text that discusses them under "Site description" below.

252324252627283031323334

Photo credit & attribution

Site description

Setting

Anderson's sample sheet records 20-25 m visibility.

General benthic features

A high-relief reef front tumbling from a coral-crowded crest into deep blue, with terraced table Acropora, staghorn thickets, cauliflower Pocillopora, clouds of orange anthias, a school of bannerfish, and a nurse shark resting under a ledge (e.g., Image 10, Image 11, Image 12, Image 13, Image 15, Image 17, Image 18, Image 19, Image 20, Image 21, Image 22); nurse shark (e.g., Image 16, Image 29).

Tagged colonies sampled at site 8 (e.g., Image 1, Image 3, Image 4, Image 6, Image 7, Image 8, Image 9, Image 14).

Coral cover

Stressors

This was tagged-and-measured monitoring work, photographed roughly three months before the 2016 El Niño bleaching event across Baa's study reefs. Some colonies already carried stark-white branch sections and tips in January 2016, recent mortality, cause not stated (e.g., Image 35).

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

Comparisons with other data

We found no other surveys at this site as of 2026. If you would like to share yours, please email us.

Other notes

Research site 8 of the January 2016 Maldives monitoring trip (sites 6 and 7 are the Gaagandufaruhuraa and Kashidhoo Faru pins; sites 9 and 10 have their own pins). The reef is not named in the field records.

CV model comparison

Mean 45%, median 45% across 49 photos.
More infoComputer-vision estimates from this site's own photographs are listed in the comparison table below, alongside the headline rather than merged into it.
Headline: a photo-based estimate, Claude's visual estimate of live hard coral on 49 of Anderson's photographs of research site 8 from January 2016, before the 2016 bleaching; most frames are oblique views, which tend to overstate cover.
More infoThe Coral Reef CPR transects (64% in April and 35% in July 2016) pool every Baa Atoll transect across five or six reef names; they are atoll-wide context, not a survey of this site, and are never averaged with the headline.
MethodHard coral cover (%)Photos (n) ± SE
Transect, July 2016, pooled Baa Atoll (atoll-wide context)34.9
Claude, January 2016 photos (photo-based estimate; headline)45.0n = 49 · SE 1.7
Transect, April 2016, pooled Baa Atoll (atoll-wide context)64.3

Data & links

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

© Coral Reef Diagnostics.