OCEAN HEALTH
Coral Bleaching Index (CBI)
Severity of thermal bleaching across tagged colonies, paired with degree-heating-week forecasts to trigger shading and outplant protocols.
Threshold Bands
| Band | Range | State |
|---|---|---|
| Healthy | 0–1 | OK |
| Watch | 2–3 | WARN |
| Bleaching | 4–6 | CRIT |
Formula
Mean colour-card score across tagged colonies; 0 = healthy, 6 = stark white.