OCEAN HEALTH
Fish Biomass Density (FBD)
Living fish biomass per hectare on monitored reefs and corridors — the most direct read on whether protection is letting populations rebuild against fishing pressure.
Threshold Bands
| Band | Range | State |
|---|---|---|
| Abundant | ≥ 120 | OK |
| Depleted | 40–120 | WARN |
| Stripped | < 40 | CRIT |
Formula
Standing fish biomass per hectare from diver and stereo-video transect counts.