Madagascar · Mitsio Archipelago
Castor Bank
Also known as: Castor Banc
Best time to dive
Season varies - confirm locally
What you might see
- BarracudaLikely
- DolphinLikely
- Grey reef sharkLikely
- Manta rayPossible
- Moray eelLikely
- Whale sharkLikely
Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.
Certification & difficulty
Advanced Open Water - advanced conditions (currents/depth); dive within your training.
Snorkelling
Not a snorkel site - Not viable - offshore submerged shoal with no surface feature (VERIFY)
Safety notes
Remote site, deep drop-off to 60m, open-sea exposure, long boat transit; rarely-dived/uncrowded
Permits & fees
None found named for this specific bank (VERIFY)
Permits and operators change - confirm before booking.
Location
Nearest hub: Nosy Be (cruise)
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.