Coral Cover: Kenya 2024

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: Kenya 2024

20 sites · 2,317 photos

Gold standard = published values (Environments 12:276, Appendix A) from 2,300 CoralNet-annotated photos. 703 photos also manually scored (via CoralNet).

Site	Date	Claude	Gold standard	Manually annotated in CoralNet	CoralNet	DINOv3	Coralscapes v1	Coralscapes v2	CoralSCOP	Mean ± SD of CV	Range
Sandy Patch/Point (Mombasa)	2024-03-11	9.2n=8	29.3n=117	10.8n=8	28.8n=117	40.0n=117	37.6n=117	37.2n=117	25.9n=110	25.0 ± 15.4	9.2–40.0
Brain Coral (Mombasa)	2024-03-11	—	27.4n=136	—	27.4n=136	42.7n=137	37.7n=137	38.9n=137	23.7n=125	33.2 ± 13.4	23.7–42.7
MMP snorkel site (Mombasa)	2024-03-14	—	39.6n=54	—	39.6n=54	54.2n=54	33.4n=54	35.9n=54	23.3n=41	38.8 ± 21.9	23.3–54.2
Diani Beach (Diani)	2024-03-16	—	34.9n=50	—	34.2n=50	38.7n=53	29.9n=53	30.2n=53	22.3n=35	30.5 ± 11.6	22.3–38.7
Reefolution nursery (Shimoni-Wasini)	2024-03-20	—	40.2n=258	—	39.6n=258	43.8n=264	32.0n=264	33.2n=264	16.3n=141	30.1 ± 19.4	16.3–43.8
Coral Garden (Kisite National Park)	2024-03-21	43.8n=27	55.0n=178	51.4n=27	46.4n=178	46.0n=179	44.3n=179	43.7n=179	20.9n=150	36.9 ± 13.9	20.9–46.0
Outer Kisite (Kisite National Park)	2024-03-21	—	36.6n=85	—	36.0n=83	42.6n=83	44.8n=83	43.7n=83	17.3n=68	29.9 ± 17.9	17.3–42.6
Dolphin Point (Kisite National Park)	2024-03-21	—	39.9n=108	—	39.8n=108	42.5n=108	35.2n=108	34.4n=108	27.0n=96	34.8 ± 11.0	27.0–42.5
Kisite National Park-site 4 (Kisite National Park)	2024-03-21	—	45.5n=71	—	45.5n=71	36.1n=71	33.0n=71	34.0n=71	17.9n=50	27.0 ± 12.9	17.9–36.1
Lower Mpunguti-site 1 (Kisite National Park)	2024-03-21	16.7n=1	18.1n=36	20.0n=1	17.1n=36	37.3n=36	17.2n=36	16.2n=36	20.5n=27	24.8 ± 11.0	16.7–37.3
Lower Mpunguti-site 2 (Kisite National Park)	2024-03-21	—	34.2n=27	—	34.2n=27	42.6n=27	18.9n=27	17.4n=27	16.9n=27	29.8 ± 18.2	16.9–42.6
Kilifi Bay (Kilifi)	2024-03-26	—	25.1n=134	—	25.6n=134	31.4n=136	22.3n=136	21.4n=136	18.5n=123	24.9 ± 9.1	18.5–31.4
Bofa (Kilifi)	2024-03-26	—	32.4n=97	—	34.0n=97	47.6n=104	29.5n=104	30.4n=104	26.6n=87	37.1 ± 14.8	26.6–47.6
Round Reef (Watamu)	2024-03-27	12.8n=175	17.8n=175	15.6n=175	13.7n=175	27.7n=175	11.8n=175	14.4n=175	15.7n=16	18.7 ± 7.9	12.8–27.7
Uyombo (Watamu)	2024-03-28	23.0n=374	24.8n=375	22.8n=374	24.5n=375	36.7n=374	19.3n=374	21.9n=374	29.1n=24	29.6 ± 6.9	23.0–36.7
North Canyon (Watamu)	2024-03-29	—	21.6n=83	—	21.6n=83	20.3n=82	15.3n=82	14.7n=82	19.1n=79	19.7 ± 0.8	19.1–20.3
Trumpet Area (Watamu)	2024-03-29	—	20.8n=193	—	20.8n=193	35.2n=193	21.3n=193	22.3n=193	20.7n=176	27.9 ± 10.2	20.7–35.2
Chipopo (Pate (Lamu))	2024-04-03	7.2n=40	12.8n=40	8.6n=40	17.3n=40	21.5n=40	6.5n=40	7.3n=40	11.8n=35	13.5 ± 7.3	7.2–21.5
Pilot Nursery (Pate (Lamu))	2024-04-03	14.1n=21	14.0n=21	12.4n=21	19.0n=21	32.6n=21	16.2n=21	18.5n=21	11.2n=16	19.3 ± 11.6	11.2–32.6
Ocean Trust Nursery (Pate (Lamu))	2024-04-03	23.3n=57	28.9n=62	22.9n=57	28.1n=62	40.3n=63	19.8n=63	18.1n=63	10.9n=41	24.8 ± 14.8	10.9–40.3
All sites (unweighted mean)		—	29.9	—	29.7	38.0	26.3	26.7	19.8	28.9 ± 12.9	19.8–38.0

Notes for Kenya 2024 (16)

[a] Gold = published cover, Mayfield 2025 Environments 12:276, Appendix A (CoralNet point annotation; denominator coral / (30 − WATER − FISH), Unk kept); n = photos in the published set. NB the CoralNet export holds 22,016 abmayfield points and 47,644 robot points.
[b] Anderson's own labels (abmayfield only) on exactly the Claude frames, all-30 (like-for-like with the Claude cell).
[c] CoralNet = the source's Machine suggestion 1 on ALL unedited frames. The classifier was trained on Anderson's own labels of these same images, so it is CIRCULAR with the gold standard (cv_method_tables.json: 'CIRCULAR, not an independent check').
[d] Same measurement as (or circular with) the reference: shown, not averaged.
[e] DINOv3 on ALL unedited photos at the site, coral / (30 − WATER − FISH), Unk kept (pin coral_cover.methods; source kenya_1450_dinov3 + pins).
[f] Coralscapes run 2026-09-18 on UNEDITED originals; per-frame outputs are on the external drive (/Volumes/OneDrive/.../Kenya_unedited_20260918, ..._coralscapesv2_20260918; logs/coralscapes*_unedited_20260918.log); site values read from the pins (not re-verified).
[g] 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.
[h] 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.
[i] CoralSCOP full run on unedited originals (coral_size_coralscop/kenya_originals_2026-09/coralscop_full, 1,444 ok of 1,450); site values read from the pins.
[j] Not applicable by ruling: Kenya edited files are CROPPED; annotations are on the originals (Anderson 2026-09-17: 'for kenya, it's only on unedited').
[k] Claude = blind point calls, 30 CoralNet points per frame, on UNEDITED originals (verified per batch in KENYA_CLAUDE_ARM_20260917.md), cover = H/30 (all-30, Unk in the denominator - the arm's canonical make_fig3_methods.score() rule, NOT the gold standard's denominator); batches 1-8, batch 9 caller C only, batch 10 (103 of 109 called); recomputed here from the predictions_kenya_batch*.json files.
[l] THIN SAMPLE (under 30 frames at this site): indicative only.
[m] GENUINELY NOT RUN at this site: none of the 703 Claude-scored Kenya frames is from here (Claude batches 1-10 cover 8 of 20 sites).
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
Kenya 2024	19	2,201	Mayfield 2025 Environments 12:276 App. A (2,300 photos, CoralNet)	2,322 images; 22,016 abmayfield pts (+47,644 robot pts in the same export)	2,298 frames Machine-suggestion-1 (CIRCULAR with the reference)	703 UNEDITED (batches 1-10; 8 of 20 sites) + kenya_claude_arm 99-frame benchmark arms	2,317 UNEDITED (pins; kenya_1450_dinov3 = 1,450)	2,319 UNEDITED (external drive; site values on pins)	2,319 UNEDITED (external drive; site values on pins)	1,444 ok UNEDITED (kenya_originals, 1,450) + 50 (batch 1)	included