Scuba Season
Underwater reef at Ambon Bay
Partly surveyed

Ambon Bay

Indonesia · Southeast Asia

Ambon Bay is the world capital of rare critter diving, where the muck and rubble slopes conceal walking sharks, Rhinopias scorpionfish, and mimic octopus — year-round diving is possible with the best macro encounters from September through March.

How this reef is doing

How we measure this

Reef state

Partly surveyed

Live coral covers 40% of this reef.

Coral cover

HEALTHY RANGE40%2018now
Improving

Fish life

Not surveyed

Heat

Not surveyed

Fishing

QuietBusy

Open to fishing, and the water is fairly quiet.

Open

Sources · MERMAID and the survey teams · Global Fishing Watch and reef gravity

Coral cover over time

Live coral cover, by survey year

Across 4 survey years from 2018 to 2024, live coral cover here has risen from 38% to 40%. Every point is a real survey reading, never a projection.

Live coral cover, percent by year

50%0%region avg 37%2018202020232024
4 surveys, 2018 to 2024
East Asian Seas average (GCRMN)
MERMAID and the survey teams, within 56 km

What you will see

11 species across the dive sites here

Dive sites

Gear & getting wet

  • Basic kit

    • Mask and fins
    • BCD and regulator
    • 3mm full wetsuit · warm water
    • Dive computer