Aldermen Islands
Also known as: Ruamaahua
Best time to dive
October to May
What you might see
- DolphinPossible
- Mola mola (oceanic sunfish)Possible
- NudibranchLikely
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 - Limited - mainly a scuba destination due to depth and offshore exposure; only feasible in sheltered lees on calm days
Safety notes
Strong currents, ocean swell, remote/exposed location with limited shelter and emergency access, cold water outside summer
Permits & fees
Not a marine reserve - no dive/take permit needed in the water; the islands themselves are a DOC Wildlife/Nature Reserve (protected since 1933) - landing prohibited without a DOC permit
Permits and operators change - confirm before booking.
Location
Nearest hub: Tairua
This profile is desk research, compiled from public sources - not a first-hand dive report. Coordinates are approximate.