Coral Cover: Halmahera 2026

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: Halmahera 2026

23 sites · 3,593 photos

No gold standard.

Site	Date	Claude	DINOv3	Coralscapes v1	Coralscapes v2	CoralSCOP	Mean ± SD of CV	Range
Failonga	2026-08-09	32.6n=201	31.4n=201	55.3n=201	58.5n=201	31.7n=201	31.9 ± 0.6	31.4–32.6
Maitara North	2026-08-09	33.1n=171	33.6n=171	48.6n=171	51.0n=171	26.3n=171	31.0 ± 4.1	26.3–33.6
AM Point 2	2026-08-09	40.4n=223	33.4n=223	57.1n=223	60.5n=223	28.0n=223	33.9 ± 6.2	28.0–40.4
Pretty Shallow	2026-08-10	32.3n=105	32.0n=105	53.7n=105	55.6n=105	30.2n=105	31.5 ± 1.1	30.2–32.3
Kusu Drift	2026-08-10	26.1n=143	27.6n=143	51.3n=143	56.2n=143	33.9n=143	29.2 ± 4.1	26.1–33.9
Pulau Sebatang	2026-08-10	41.1n=265	33.5n=265	65.3n=265	66.7n=265	36.2n=265	36.9 ± 3.9	33.5–41.1
Tower Corner	2026-08-11	34.0n=242	35.4n=242	55.4n=242	57.6n=242	34.4n=242	34.6 ± 0.7	34.0–35.4
Batu Mangga	2026-08-11	20.9n=236	35.8n=236	52.1n=236	55.0n=236	32.9n=236	29.9 ± 7.9	20.9–35.8
Sali Bay-Batu Mangga	2026-08-11	29.2n=125	29.1n=125	51.5n=125	51.2n=125	29.0n=125	29.1 ± 0.1	29.0–29.2
Tanjung Naraka	2026-08-12	29.6n=136	30.1n=136	53.5n=136	54.6n=136	35.3n=136	31.7 ± 3.2	29.6–35.3
Tanjung Dehebra	2026-08-12	25.0n=103	27.7n=103	51.8n=103	54.0n=103	34.3n=103	29.0 ± 4.8	25.0–34.3
Kusu Ridge	2026-08-12	45.2n=249	42.7n=249	63.6n=249	66.0n=249	27.7n=249	38.5 ± 9.5	27.7–45.2
Jerot	2026-08-13	22.9n=172	27.5n=172	55.2n=172	56.8n=172	41.6n=172	30.7 ± 9.7	22.9–41.6
Proco	2026-08-13	32.0n=227	31.9n=227	51.5n=227	54.2n=227	33.8n=227	32.6 ± 1.1	31.9–33.8
Kusu Drift (round 2)	2026-08-13	43.0n=105	31.8n=105	60.6n=105	65.0n=105	37.9n=105	37.6 ± 5.6	31.8–43.0
Merida Cavern	2026-08-14	27.3n=125	24.3n=125	37.8n=125	40.6n=125	31.4n=125	27.7 ± 3.6	24.3–31.4
Batu Balong shallows-near anchorage	2026-08-14	56.5n=213	33.3n=213	70.2n=213	73.8n=213	38.1n=213	42.6 ± 12.2	33.3–56.5
Batu Balong	2026-08-14	39.4n=126	28.0n=126	60.0n=126	61.3n=126	34.1n=126	33.8 ± 5.7	28.0–39.4
Batu Mandi	2026-08-14	11.9n=22	17.0n=22	34.0n=22	36.4n=22	28.4n=22	19.1 ± 8.4	11.9–28.4
Siko Tanjung	2026-08-15	41.3n=143	30.5n=143	57.6n=143	59.3n=143	32.3n=143	34.7 ± 5.8	30.5–41.3
Siko Pinnacle	2026-08-15	11.6n=48	18.8n=48	33.5n=48	37.0n=48	26.6n=48	19.0 ± 7.5	11.6–26.6
Reene's Rock (Pulau Gewang)	2026-08-15	13.1n=39	18.4n=39	32.4n=39	37.0n=39	22.9n=39	18.1 ± 4.9	13.1–22.9
Lelay Utara (north)	2026-08-16	47.8n=174	31.1n=174	57.2n=174	58.5n=174	30.1n=174	36.3 ± 9.9	30.1–47.8
All sites (unweighted mean)		32.0	29.8	52.6	55.1	32.0	31.3 ± 1.3	29.8–32.0

Notes for Halmahera 2026 (11)

[a] No gold standard exists (no transect, no frames manually annotated in CoralNet).
[b] Not applicable: no CoralNet source / hand annotations exist for these photos.
[c] Value read from cv_method_tables.json (injector output, generated 2026-09-28 22:33); the scope text there gives denominator and frame set.
[d] 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).
[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 run by ruling: this is an UNEDITED region (EDITED_UNEDITED_RULES.md).
[h] Claude = blind 7-call point count on the UNEDITED photos, 20 points per photo, (HC+BL)/(20 − WATER − FISH − OBST), UNK kept in; mean across photos (arm ledgers, via cv_method_tables.json).
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
Halmahera 2026	23	3,647 (1,687 iCloud-dataless on 09-25)	—	—	—	3,593/3,593 UNEDITED - full-set arm, complete	3,593 UNEDITED	3,593 UNEDITED	3,593 UNEDITED	3,733 ok UNEDITED (map build)	included