Oman - Novice Bay (Muscat)
Part of the regional summary: Oman
More info
Gulf of Oman (NOAA CRW virtual station)Novice Bay is a strongly zoned Muscat reef, its shallow flat of brain corals and Pocillopora thickets grading into leather-coral slopes and then deep coralline buttresses, with a resting green turtle, a banded sea snake, and a camouflaged scorpionfish among the highlights. Published hard coral cover is 47% (manual point counts), with soft coral at 29% - this was the only one of the seven 2024 Oman survey sites to show any trace of bleaching (0.2% of points), recorded weeks before the region's July 2024 bleaching event began in earnest.
خليج نوفيس شعبة شديدة التنطق قرب مسقط، يتدرج مسطحها الضحل المكوّن من مرجان الدماغ وأجَمات Pocillopora إلى منحدرات من المرجان الجلدي ثم إلى دعامات مرجانية عميقة، ومن أبرز مشاهداتها سلحفاة خضراء مستريحة، وثعبان بحر مخطط، وسمكة عقرب متخفية.
ترجمة هذا الملخص بالذكاء الاصطناعي؛ النص الإنجليزي هو المعتمد. Translated from the site’s shorter map summary.
Eight independent survey stations shown with the program’s logo — click one to see how far it is from this site.
One other CRD dive site within 5 km shown in orange — click a marker to open its page.
9 of these 20 photographs are shown beside the text that discusses them under "Site description" below.
Site description
Setting
A strongly zoned reef below a barren Muscat headland: a shallow flat of brain corals, lobophylliids, and Pocillopora thickets grades into slopes carpeted by Sarcophyton-type leather corals, then deep coralline buttresses and a rubble plain with sea whips (e.g., Image 1, Image 2, Image 4, Image 6, Image 7, Image 15, Image 19, Image 20).
Coral cover
Hard coral cover 47% (manual CoralNet point counts, 2025 re-analysis; Mayfield 2025, Platax), with soft coral 29.0% and turf algae 14.4%. Published hard coral cover 47% (Mayfield 2025, Platax; manual CoralNet point counts, benthic denominator). Sample sizes: manual 135 photos · CoralNet 114 · DINOv3 120 · CoralSCOP 130. Multi-method mean 38.7% ± 11.
Stressors
The only site of the survey with any bleaching — a trace 0.2% of hard coral points. No bleaching observed during these May 2024 surveys, before the seasonal SST peak; NOAA CRW recorded Alert Level 2 heat stress and bleaching was reported along this coast from July 2024, weeks after the surveys. No crown-of-thorns starfish (COTS) or other corallivores evident.
Fish and other fauna
Highlights included a resting green turtle, a banded sea snake, an ocellated nudibranch, and a camouflaged scorpionfish (e.g., Image 12).
Comparisons with other data
Coral cover — external cross-reference (Reef Check). Two independent measurements, reported side by side and deliberately not averaged. Anderson Mayfield / CRD: 38.7% hard coral (2024). The two are 7 years apart (CRD later). Methods differ (CRD photographic/point-count index vs Reef Check point-intercept transect). Reef Check site positions are approximate; at 0.39 km apart the two surveys may have sampled different patches of the same reef, which is the main caveat on this comparison. Different station, different observers: a near-concurrent cross-check, not a repeat of this site.
CV model comparison
More info
Cave Site is the ONLY real CoralNet comparison in this region. The two CoralSCOP columns are PAIRED — a frame counts only if the same stem was scored in both runs, so edited minus unedited is not a frame-selection artifact. CoralSCOP cover is a mask-sum AREA fraction; no point denominator applies to it. The Claude column is the edited-photo blind arm (15 frames/site, 13 at Daymaniyat site 3). The harder unedited fair test is a separate, non-interchangeable number. CoralNet automated point classifier: n/a — every frame at this site was scored by Anderson, not by CoralNet's classifier, so there is no CoralNet value| Method | Hard-coral cover (%) |
|---|---|
| Manual (published) | 38.5 |
| In-house DINOv3 | 23.0 |
| CoralSCOP unedited | 45.9 |
| CoralSCOP edited | 47.3 |
| Claude | 42.2 |
Independent surveys nearby
| Agency / program | Year(s) | Stations / distance | Link |
|---|---|---|---|
| Environment Authority-Oman | 2026 | 1 station, 1.09 km | Records ↓ |
| MERMAID project “coral cover BK”* | 2024–2025 | 4 stations, 0.29–1.81 km | Records ↓ |
| Reef Check | 2017 | 1 station, 0.39 km | Records ↓ |
| Sultan Qaboos University | 2025 | 2 stations, 3.86–3.87 km | Records ↓ |
Dr. Coral (CRD)Year-average (increasing)Within 5 km, 8 independent survey stations recorded hard coral cover in 33 records between 2017 and 2026. Of the 1 station surveyed in more than one year, 1 increased between their first and latest surveys. The longest record, BK big mount (MERMAID project “coral cover BK”*, 1.20 km away), went from 60% in 2024 to 70% in 2025. Surveys since 2021 average 46% (range 34–70%, n=10). This site's own estimate (39%) sits within the recent range (34–70%); the methods differ, so the comparison is context, not a like-for-like test.
Collected by other programs using different methods (Reef Check uses point-intercept transects; MERMAID is a data platform: each MERMAID row names the organization that did the survey, and its method is in the row's hover text. *Conducted by citizen scientists), so these are context for the figures above, not a like-for-like comparison. Where a station was surveyed more than once the range is shown. Station names are not dive-site names.
Data & links
- CoralNet image repository for this region ↗
- Photo portfolio ↗
- Coral Reef Diagnostics page for this area ↗
All images from Coral Reef Diagnostics. Data are from Coral Reef Diagnostics and the organizations named in the data-sources table above.
© Coral Reef Diagnostics.