Maldives - Dhidhoo Beyru
Part of the regional summaries: Maldives - Central (Male Atolls / Ari / Vaavu) and Maldives
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Maldives (NOAA CRW virtual station)An early-stage crown-of-thorns outbreak at the southern tip of Ari Atoll: on 24 May 2017 Anderson's field sheet records more than 200 starfish seen and 27 collected, with 5% to 10% of corals (mostly acroporids) eaten.
އަރި އަތޮޅުގެ ދެކުނު ކޮޅުގައި، ފެށުމުގެ މަރުޙަލާގައިވާ crown-of-thorns އައުޓްބްރޭކެކެވެ: 24 މެއި 2017 ގައި Anderson ގެ ފީލްޑް ޝީޓުގައި ރެކޯޑްކޮށްފައިވަނީ 200 އަށްވުރެ ގިނަ ސްޓާފިޝް ފެނުނު ކަމަށާއި، 27 ސްޓާފިޝް ނެގި ކަމަށާއި، ހިރިގާގެ 5% އިން 10% އާ ހަމައަށް (ގިނައިން acroporids) ކާލެވިފައިވާ ކަމަށެވެ.
AI translation of this summary; the English is authoritative. (low confidence)
Two independent survey stations shown with the program’s logo — click one to see how far it is from this site.
Two other CRD dive sites with their own pages within 5 km shown in orange — click a marker to open its page.
Site description
Dhidhoo Beyru is a dive site in South Ari Atoll, Maldives, visited on 24 May 2017 during Anderson Mayfield's 2017 Maldives coral sampling program. The dive reached a maximum depth of 18 m. The position shown is approximate: the field sheet records only the atoll, so the marker sits on an online dive-site atlas entry for Dhidhoo Beru rather than on a surveyed fix. On this dive (24 May 2017), Anderson's field sheet records a crown-of-thorns starfish (COTS) outbreak in its beginning stages: more than 200 seen, 27 collected, and 5% to 10% of corals (mostly acroporids) eaten. Coral cover: 20% — a blind Claude computer-vision point count of 42 of Anderson's edited photographs (20 points per photo; water, fish, and obstructions excluded).
CV model comparison
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A 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.More info
Other rows are for comparison only and are never averaged. No diver transect exists for these photos, so agreement between rows is not accuracy.| Method | Hard coral cover (%) | Photos (n) ± SE |
|---|---|---|
| Claude (edited photos) | 20.4 | n = 42 · SE 2.1 |
See a more detailed, stand-alone version of this table.
Independent surveys nearby
Coral Reef DiagnosticsWithin 5 km, 2 independent survey stations recorded hard coral cover in 8 surveys between 2016 and 2023. Of the 2 stations surveyed in more than one year, 2 declined (by 12–44 points) between their first and latest surveys. The longest record, Dhigurah Wall (Reef Check, 4.43 km away), went from 39% in 2016 to 27% in 2023 (mean of 2 surveys). Since 2021, station-year means average 23% (range 19–27%; n = 2 station-years from 4 surveys). This site's own estimate (20%) is not compared with these surveys: none lies within 2 km.
Collected by other programs using different methods (Reef Check uses point-intercept transects), 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.
| Agency | Site / location | Date | Hard coral cover (%) | Distance |
|---|---|---|---|---|
| Reef Check | Coral Garden | 2016–2022 | 19–63% (range of yearly means; 3 surveys) | 4.21 km |
| Reef Check | Dhigurah Wall | 2016–2023 | 22–39% (range of yearly means; 5 surveys) | 4.43 km |
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.