Coral Cover: Red Sea

Shaded value = in the CV mean (shade deepens with cover) Grey italic = shown for comparison but left out of the CV mean: the gold standard and manual CoralNet annotations (human reference values, not models), Coralscapes (not trusted), and any value that reuses the reference's own data n = frames behind the value — = not run or not applicable (see each region's notes) Site names and method names link out (new tab)

Coral Cover: Red Sea - Egypt 2024

11 sites · 1,368 photos

Gold standard = published values, by area only (no per-site gold). 159 photos manually scored (via CoralNet) for the benchmark. CoralSCOP ran on both edited and unedited photos (separate columns).

Site	Date	Claude	Claude full set	Manually annotated in CoralNet	DINOv3	Coralscapes v1	Coralscapes v2	CoralSCOP unedited	CoralSCOP edited	Mean ± SD of CV	Range
Marsa Nakari-North (Marsa Nakari)	2024-09-20	—	partial 0/172	—	—	18.2n=9	16.9n=186	28.4n=205	27.1n=142partial 142/188	27.7 ± 1.0	27.0–28.4
Nakari House Reef-South (Marsa Nakari)	2024-09-20	27.7n=30	partial 0/103	23.3n=30	46.1n=30	10.1n=45	17.9n=108	25.9n=119	26.7n=101partial 101/108	31.6 ± 9.7	25.9–46.1
Habili El Ghadeer (Marsa Nakari)	2024-09-21	—	partial 0/147	—	—	10.5n=9	15.4n=148	24.7n=154partial 154/168	partial 0/148	24.7	24.7–24.7
Om Halhala (Marsa Nakari)	2024-09-21	—	27.4n=145partial 145/206	—	—	12.8n=12	19.4n=206	31.0n=99partial 99/221	partial 0/206	31.0	31.0–31.0
Gazella Reef (Wadi Lahami)	2024-09-22	29.8n=30	17.1n=146partial 146/204	23.0n=30	46.4n=30	12.2n=36	11.2n=205	18.0n=7partial 7/223	partial 0/208	31.4 ± 14.3	18.0–46.4
Habili Daisy (Wadi Lahami)	2024-09-22	—	partial 0/50	—	—	12.3n=58	16.2n=8	22.7n=49partial 49/58	partial 0/8	22.7	22.7–22.7
Shabrour-north (Wadi Lahami)	2024-09-22	27.5n=99	partial 0/92	24.2n=99	45.2n=99	16.2n=101	18.2n=94	17.4n=9partial 9/108	partial 0/95	30.0 ± 14.1	17.4–45.2
Shabrour-south (Wadi Lahami)	2024-09-22–23	—	partial 0/221	—	—	10.8n=38	18.8n=128	27.4n=102partial 102/242	partial 0/129	27.4	27.4–27.4
Abu Galawa-small (Wadi Lahami)	2024-09-23	—	20.9n=149partial 149/188	—	—	15.0n=203	—	23.1n=203	—	23.1	23.1–23.1
Habili Gazella (Wadi Lahami)	2024-09-23	—	17.6n=147partial 147/176	—	—	11.2n=191	—	21.9n=190partial 190/191	—	21.9	21.9–21.9
Salah (Wadi Lahami)	2024-09-23	—	24.6n=146partial 146/212	—	—	18.7n=231	—	29.1n=231	—	29.1	29.1–29.1
All sites (unweighted mean)		—	—	—	—	13.4	—	24.5	—	24.5	24.5–24.5

Notes for Red Sea - Egypt 2024 (17)

[a] No per-site gold standard: the published manual cover (Mayfield 2025, Environments 12:248, Table 4) is by AREA only - Wadi Lahami 22.1% (n=1180); Marsa Nakari 21.4% (n=674).
[b] Not built: CoralNet robot labels exist in the Red Sea export, but the Site field is empty on its 207,090 rows, so no site join has been made (build_region_cv_table.py --list).
[c] Coralscapes v1 on UNEDITED frames (coralscapes_unedited_by_pin.json; the CSV also carries the unedited v2 value). Per-frame outputs on the external drive.
[d] Coralscapes (v1 EPFL-ECEO/coralscapes-vit-b-dpt; v2 coralscapesv2-dinov3-vitb-lora-dpt) is not trusted (Anderson): shown, never averaged. Area fraction, not a point count.
[e] CoralSCOP = per-frame sum of colony-mask area fractions (zero-filled; overlapping masks double-count), averaged over frames with an ok row. Area index, not a point count: denominator differs from any point-count reference.
[f] CoralSCOP full-set run, Egypt 'unedited' group (coralscop_survey_egypt_unedited; for dives 58-62 these bins are the '-AI' processed folders), IN PROGRESS.
[g] Claude FULL-SET arm (redsea_full_claude_arm; EDITED, AI-processed where no edit exists; 20 pts, 7-call, (HC+BL)/(20 − WATER − FISH − OBST)), RUNNING: shown, not averaged until complete.
[h] PARTIAL - run still in progress; value is on the frames scored so far (n shown; N = frames in the arm/manifest for this site, see header line).
[i] Anderson's own CoralNet points on the benchmark frames (redsea_claude_arm, 746 frames), (30 − WATER − FISH − DVR), Unk kept (Red Sea paper §2.2), recomputed per frame by score_redsea_claude_20260919.py ('refb').
[j] DINOv3 (priority6 fine-tune) point predictions at Anderson's CoralNet points on the benchmark frames (CRD AI/redsea_cv_2026-09/redsea_dinov3_point_predictions.csv); hard_coral / (points − WATER − FISH − DVR by reference label). No full-set DINOv3 run exists (runner written 2026-09-23, never run).
[k] Coralscapes v2 on EDITED frames (data_reports/redsea_cv_20260923/coralscapes_edited_v2_by_pin.json; per-frame outputs on the external drive).
[l] THIN SAMPLE (under 30 frames at this site): indicative only.
[m] CoralSCOP full-set run, EDITED frames (maps/redsea_map_build/coralscop_survey_saudi = the CoralNet-annotated Saudi subset, and coralscop_survey_egypt_edited), IN PROGRESS.
[n] Claude benchmark arm (redsea_claude_arm, complete 746/746): blind HC/NOT/UNK calls at Anderson's 30 CoralNet points, same denominator as the manually annotated (CoralNet) cell ('clb'). Frames shown were mostly UNEDITED (645 of 747 index rows); basis per site in the CSV.
Mean/Range: Mean ± SD and Range are over the CV cells that enter the mean (CoralNet where independent, DINOv3, CoralSCOP unedited/edited, Claude). Gold standard, frames manually annotated in CoralNet, Coralscapes and same-measurement cells are shown but never averaged (*).
Methods: Claude (Anthropic); DINOv3 (Meta; paper; used here as the frozen backbone of the in-house classifier); Coralscapes v1 and v2 (EPFL-ECEO; dataset paper, code); CoralSCOP (Zheng et al., CVPR 2024); CoralNet.
Sites: names drop the region prefix (hover for the full name) and link to the site's CRD page, or to the regional summary page where the site has none. Date = survey date from the map pins (first–last visit); sites are listed earliest first, undated sites last.

All regions