Madagascar · Radama Archipelago
Greg's Wall
Also known as: Greg Wall
Best time to dive
April to June; September to December; January to March
What you might see
- BarracudaLikely
- Grey reef sharkLikely
- Hammerhead sharkLikely
- NudibranchLikely
- SeahorseLikely
- Whale sharkLikely
Sightings are seasonal probabilities, not promises - even in peak season nature does its own thing.
Certification & difficulty
Technical - advanced conditions (currents/depth); dive within your training.
Snorkelling
Not a snorkel site - Not viable - deep wall and cave dive
Safety notes
Significant depth (to 33m), cave/tunnel feature requiring good buoyancy and no-touch discipline, remote location far from medical facilities, possible strong current
Permits & fees
Permits and operators change - confirm before booking.
Location
Nearest hub: Nosy Be
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.