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Nusa Penida · boat

Crystal Bay

Editorial plate — compiled from published sources, not yet confirmed by a verified diver. Dived here? Verify this plate.

West coast, Nusa Penida

8.71360°S, 115.45480°E

A bay on Nusa Penida's west coast where cold upwellings bring oceanic sunfish (mola mola) up to cleaning stations Aug–Oct.

Depth
2–25 m

Typical 18 m

Vis
30–50 m

16–29 °C

Current
variable
Health
Unscored

Awaiting verified ratings

Geo (surface approx.)
8.71360°S, 115.45480°E

Coordinates from a cited source.

Entry / access
boat

Inside the bay the reef is sheltered, but its outer edges take strong currents that can move sideways or down, along with sharp cold thermoclines. When cold water rises in the dry season, mola mola come up the slope to be cleaned, which is why the site is so famous. Water can be very clear and very cold in the same dive.

Difficulty
advanced

Advanced Open Water

Best season
Aug–Oct for mola mola
Last reviewed
20 Oct 2026 by editorial

Hazards

  • high · Strong, confused currents and down-currents on the outer edge
  • medium · Cold thermoclines
  • low · Surge near the rocks

Marine life

Typical: mola mola, leopard shark, whitetip reef shark, frogfish, scorpionfish, pink anemonefish

Durable site rating

Multi-axis score

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Condition reports

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Living record

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Questions people search

How deep is Crystal Bay?

2–25 m (typical 18 m).

Is Crystal Bay suitable for beginners?

advanced — Advanced Open Water

Sources

Where sources disagree

Level: advanced (Bali.com) vs all levels (Duikersgids) vs beginner in the bay/advanced at the corner (nusapenida.org); kept advanced. Max depth 25 m (Diveplanit/Bali.com) vs 35 m (Duikersgids) vs 40 m on the wall (nusapenida.org). Current calm in the bay but strong at the corner/outside (Diveplanit, Duikersgids, nusapenida.org) — variable confirmed. Min depth 2 m (Diveplanit) vs 10 m (Bali.com).

Durable multi-axis scores sit on the rating plate. File a timestamped condition report, CoralWatch colour, or debris card on today's report. Public averages stay verified-only. Book at an Andaman dive centre.