Coral Cover: Maldives #2 2017

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: Maldives #2 2017

24 sites · 919 photos

No gold standard.

Site	Date	DINOv3	CoralSCOP	Mean ± SD of CV	Range
checkout [Checkout dive (Hulhumale outer reef)]	2017-05-13	15.4n=10	22.1n=10	18.8 ± 4.7	15.4–22.1
back_faru [Back Faru]	2017-05-14–21	13.9n=71	14.6n=20	14.2 ± 0.4	13.9–14.6
bodu_hithi_thila [Bodu Hithi Thila]	2017-05-14–15	14.8n=52	16.5n=20	15.6 ± 1.2	14.8–16.5
feydoo_wall [Feydoo Wall]	2017-05-15	23.6n=13	20.5n=13	22.1 ± 2.2	20.5–23.6
georgias_reef [Georgia's Reef]	2017-05-15	16.8n=33	23.1n=20	19.9 ± 4.5	16.7–23.2
miyaro_faru [Miyaro Faru]	2017-05-16	17.0n=18	23.4n=18	20.2 ± 4.5	17.0–23.4
vaadhoo_caves [Vaadhoo Caves]	2017-05-16	7.2n=21	14.4n=20	10.8 ± 5.1	7.3–14.4
veligandu [Veligandu]	2017-05-16	13.0n=17	22.4n=17	17.7 ± 6.7	13.0–22.4
ghuli_faru [Ghuli Faru]	2017-05-17	10.3n=24	12.7n=18	11.5 ± 1.7	10.3–12.7
miyaru_bay [Miyaru Bay]	2017-05-17–18	15.1n=21	15.0n=20	15.1 ± 0.0	15.0–15.1
big_sand_bank_2017 [Big Sand Bank]	2017-05-18	15.8n=23	19.6n=20	17.7 ± 2.7	15.8–19.6
kudagiri_wreck [Kuda Giri Wreck]	2017-05-18–22	18.2n=63	21.0n=20	19.6 ± 2.0	18.2–21.0
hodeli_bodu_giri [Hodeli Bodu Giri]	2017-05-19	21.0n=28	25.4n=20	23.2 ± 3.1	21.0–25.4
kandooma_thila [Kandooma Thila]	2017-05-19–22	13.2n=50	7.3n=19	10.3 ± 4.2	7.3–13.2
fish_tank [Fish Tank]	2017-05-21	11.2n=19	4.9n=17	8.1 ± 4.4	4.9–11.2
lankan_faru [Lankan Faru]	2017-05-21–22	9.2n=85	22.3n=18	15.8 ± 9.3	9.2–22.3
camel_point [Camel Point]	2017-05-23	22.9n=74	25.5n=20	24.2 ± 1.8	22.9–25.5
lohosfushi_corner [Lohosfushi Corner]	2017-05-23	14.2n=25	16.3n=20	15.2 ± 1.5	14.1–16.3
ari_south_tip [Ari Atoll south tip]	2017-05-24	18.5n=84	18.7n=20	18.6 ± 0.1	18.5–18.7
dhigga_thila [Dhigga Thila]	2017-05-24	21.6n=24	28.6n=20	25.1 ± 5.0	21.6–28.5
dhega_thila [Dhega Thila]	2017-05-25	25.2n=61	20.8n=20	23.0 ± 3.2	20.8–25.2
fesdhoo_wreck [Fesdhoo wreck]	2017-05-25	15.1n=32	13.8n=20	14.4 ± 0.9	13.8–15.1
moofushi_kandu [Moofushi Kandu]	2017-05-25	20.8n=34	10.9n=20	15.8 ± 7.1	10.9–20.8
fish_house [Fish House (Fish Head)]	2017-05-26	12.5n=37	6.3n=20	9.4 ± 4.4	6.3–12.5
All sites (unweighted mean)		16.1	17.8	16.9 ± 1.2	16.1–17.8

Notes for Maldives #2 2017 (12)

[a] No gold standard (no transect or frames manually annotated in CoralNet for the 2017 trip).
[b] Not applicable: no CoralNet source / hand annotations of Anderson's Maldives photos exist (wide search 2026-09-29; the only Maldives CoralNet source found is an outside project).
[c] DINOv3 (in-house, frozen Alor/Indonesia model) = mean hard-coral probability over 20 synthesized points per photo, NO water/fish class, so not a benthic denominator (from the map build's hard_coral_cover_by_site.csv).
[d] GENUINELY NOT RUN: no Coralscapes v1/v2 output for the Maldives on disk or recorded on the external drive (wide search 2026-09-29).
[e] Not applicable: both Maldives trips are EDITED sets (EDITED_UNEDITED_RULES.md); no unedited originals staged.
[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] CoralSCOP ran on a staged subset (maps/maldives_map_build/coralscop_survey: 878 ok frames over 47 folders, up to ~20 frames per folder at the larger sites), not every photo.
[h] THIN SAMPLE (under 30 frames at this site): indicative only.
[i] GENUINELY NOT RUN: no Claude arm for the Maldives (model_comparison_audits/ has none).
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

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

Trip	Dives	Photos	Reference / transects	Manual points	CoralNet	Claude	DINOv3	Coralscapes v2	Coralscapes v1	CoralSCOP	Table
Maldives #2 2017	33	925	—	—	—	—	4,067 photos both trips (919 in #2 table)	—	—	878 ok both trips, staged subset (450 in #2 table)	included