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: Mauritius 2025

7 sites · 344 photos

Gold standard = 344 manually scored (via CoralNet) photos (draft manuscript).

SiteDateClaudeCodexGold standardCoralNetDINOv3Coralscapes v1CoralSCOPMean ± SD of CVRange
Reef Garden2025-02-0126.7n=10519.3n=15partial 15/10526.3n=10527.8n=10544.6n=10538.4n=9722.2n=10530.3 ± 9.822.2–44.6
Ti Korail2025-02-017.4n=400.0n=4partial 4/407.0n=4010.6n=4021.9n=4013.0n=3820.5n=4015.1 ± 7.27.4–21.9
Bamboo2025-02-0413.8n=4017.1n=8partial 8/4017.2n=4011.8n=4019.9n=4013.1n=3916.9n=4015.6 ± 3.511.8–19.9
Aquarium-Big Rock2025-02-048.3n=408.9n=6partial 6/4014.0n=407.0n=4015.3n=408.2n=3513.0n=4010.9 ± 3.97.0–15.3
Carpenter2025-02-0912.3n=4013.8n=8partial 8/4014.6n=4010.9n=4021.2n=4013.6n=3721.0n=4016.4 ± 5.510.9–21.2
Lost Anchor2025-02-099.2n=3912.0n=5partial 5/3910.5n=3910.0n=3920.3n=3911.9n=3820.5n=3915.0 ± 6.29.2–20.5
Anemone Garden2025-02-102.9n=4020.0n=3partial 3/402.7n=407.7n=4033.3n=4017.9n=3930.5n=4018.6 ± 15.52.9–33.3
All sites (unweighted mean)11.513.013.212.325.216.620.717.4 ± 6.711.5–25.2
Notes for Mauritius 2025 (11)
  • [a] Value read from cv_method_tables.json (injector output, generated 2026-09-28 22:33); the scope text there gives denominator and frame set.
  • [b] Gold = Anderson's manual point count, draft Mauritius manuscript (unpublished, v42 Table 3), ALL-30 denominator (water and fish left in); every CV cell is on the SAME 344 frames.
  • [c] On external drive (not verified): Coralscapes v2 ran on 574 unedited frames 2026-09-18 (~/Documents/Claude/logs/coralscapesv2_mauritius_20260918.log, last lines: CSV -> /Volumes/OneDrive/Coral computer vision/regions/Mauritius_unedited_coralscapesv2_20260918/benthic_coverage.csv); no local copy, no site values anywhere on disk.
  • [d] Coralscapes v1 (EPFL-ECEO/coralscapes-vit-b-dpt) on UNEDITED frames: 10 live hard-coral classes, area / whole frame, frames with >50% background dropped (mauritius-coral-cv README rule); recomputed in model_comparison_audits/mauritius_cv_review_20260928/per_site.csv (filtered=True, mode=live) from mauritius-coral-cv/data/coralscapes_benthic_coverage_*.csv. The pins file this value under the v2 id ('coralscapes'); it is v1.
  • [e] 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.
  • [f] 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.
  • [g] Not applicable: Mauritius has no edited copies (EDITED_UNEDITED_RULES.md: 347/347 unedited).
  • 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 (*).
  • Codex: OpenAI Codex run as a blind point caller (tests 1–3 and revisions 4–6, Codex CV/03–11), 30 CoralNet points per photo, hard-coral points / 30 (all points in the denominator, abstentions count as not coral), mean across photos. 49 photos in all (3–15 per site) out of the 344 reference photos, so each cell is partial (n/N) and thin. Values = the paper's 49-image set as filed on the pins, reproduced exactly from mauritius-coral-cv/data/codex_point_calls_49_images.csv. Shown, not averaged: the supplement (v4, Table S11) says neither language model was run over a site's full frame set, so neither gives a comparable site-level estimate.
  • 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

This trip: what has run, photo basis and photo counts

TripDivesPhotosReference / transectsManual pointsCoralNetClaudeDINOv3Coralscapes v2Coralscapes v1CoralSCOPTable
Mauritius 20257615draft manuscript manual (unpublished)344 frames x 30 pts (TableS2)344 frames (CoralNet classifier)344 UNEDITED - manuscript context protocol (not fully blind); + blind ctx batches / Codex subsets344 UNEDITED574 run UNEDITED - on external drive (not verified)574 run UNEDITED (323 in site table after >50% background filter)344 ok UNEDITED (coralscop_manual323)included