

Best for intermediate divers, 10-22m, boat entry, moderate current.
The Ridge Holes in Dingle Bay Reefs feature a distinctive rock formation characterised by a series of large, deep, circular holes along the top of a ridge. This site offers a varied underwater landscape of walls, caves, and reefs. Divers can expect depths ranging from 10 to 22 metres, with an average of 16 metres. Access is by boat only, and the site is suited for intermediate divers due to moderate currents and potential surge. Visibility typically fluctuates between 5 and 15 metres. The habitat supports a diverse range of temperate marine life and invertebrates typical of the Southwest Coast of Ireland.
52.33689, -10.05648
Each hole acts as a natural fish trap, concentrating crabs, lobsters, and small fish in sheltered pockets.
Boat dive from the pier at Scraggane Pier.
Recorded at this site
Depth
10-22m
Visibility
5-15m
Skill Level
Intermediate
Entry
Boat
Boat required
Water Temp
9-15°C
Current
Moderate
The site supports a variety of temperate marine life and invertebrates, including various reef fish and crustaceans that inhabit the ridge and cave structures.
No, this site is rated for intermediate divers due to the presence of moderate currents and surge conditions.
The site ranges from 10 to 22 metres in depth, with an average depth of 16 metres.
Access to The Ridge Holes is by boat only.
The site is primarily a dive location with depths reaching 22 metres, making it less suitable for snorkelling.
Diving at The Ridge Holes in Castlegregory requires the following certifications: Open Water. Always dive within your training limits.
A drysuit recommended is recommended for diving at The Ridge Holes in Castlegregory. Water temperatures range from 9°C to 15°C.
Expect moderate currents at The Ridge Holes in Castlegregory. Good buoyancy control and some drift diving experience is helpful.
Visibility at The Ridge Holes in Castlegregory typically ranges from 5 metres to 15 metres. Conditions vary with weather, tides, and seasons.