Oceanatik logo
HomeDestinationsDive SmartContact Us
Dive Hotspot

Three Castle Head

County Cork, Ireland
Depth
Depth Icon
197ft
Visibility
Visibility Icon
20ft - 59ft
Entry
Boat Icon
boat
Experience Level
Advanced

About Three Castle Head

The Southern end of Dunmanus Bay is reached at 3 Castle Head where the 50m depth contour almost touches the shore and in fact the drop off is so fast that it is hard to find water shallow enough to drop anchor! The last 100m of the bay offers the best of diving with massive cliffs above and below water. Below the surface extensive rock faces are covered in every kind of life and large shoals of fish abound. The best of the scenery is in the 25-35m range, with rocks tumbling down a further 25m below this again. A strong tidal current flows across the point so be careful not to venture into it if the tide is running. This site is exposed and isolated and requires calm weather, experienced divers and reliable boats to be dived safely. However, the rewards well justify the extra effort.

Three Castle Head Dive Info: Key Characteristics and Details

Unit Settings

Terrain and Features: Reef, Drop Off, Rock
Entry Type:Boat
Max Depth:60m
Visibility Range:6m - 18m
Experience Level:Advanced
Best Gas:-

Marine Life

  • Various

Weather Conditions

Seeking Exact Location of Three Castle Head: Weather Data Missing - Share Your Knowledge!

Dive Operators near Three Castle Head

Location for Three Castle Head not pinpointed yet, and no nearby Dive Operators found. Explore all Dive Operators in Ireland here

Dive Site Hazards

Although we currently lack information on specific hazards at this location, their absence cannot be assumed. Your knowledge and experience with this dive site could greatly enhance our page – we invite you to share your insights.

Location

We don't have the location details for Three Castle Head, so it can't be displayed on the map. If you know the location, please share it with us!

Discover More

All Dive Sites in Ireland

North America - Belize

Belize is a diver’s playground where the Caribbean’s only three true atolls cradle kaleidoscopic coral gardens, steep drop-offs and the iconic Great Blue Hole. Glide over nurse-shark nurseries at Hol Chan, descend along Lighthouse Reef’s vertiginous walls, or time your visit to Placencia for exhilarating whale-shark encounters at Gladden Spit. Warm 26-29 °C waters, 15-30 m visibility and a laid-back Creole-Garífuna culture turn every surface interval into a tropical holiday. Whether you’re certifying in shallow seagrass meadows or racking up tech-level depth on coral-encrusted ledges, Belize blends world-class marine biodiversity with sustainable operators, eco-minded lodges and easy travel connections—making it the perfect base for both first-time bubbles and bucket-list underwater adventures.

Learn More

From turtle-dotted coral gardens in St. Anne Marine Park to hammerhead-patrolled drop-offs off North Island, Seychelles delivers a kaleidoscope of undersea thrills wrapped in postcard-perfect island scenery. Warm, crystal-clear waters averaging 27 °C (81 °F) year-round, dependable dive centers with eco-friendly practices, and a laid-back Creole vibe make this Indian Ocean nation a bucket-list destination for beginners and technical divers alike. This comprehensive guide shares firsthand insight into the best reefs, wrecks, and night-dive hotspots, explains seasonal conditions and marine migrations, outlines practical travel and accommodation advice, and highlights sustainable ways to explore—ensuring your Seychelles dive holiday is unforgettable and reef-safe.

India’s 7 500 km of coastline and two remote archipelagos create a dreamscape for beginners and pros alike: seagrass meadows where dugongs graze, manta-patrolled pinnacles off Havelock, Lakshadweep’s gin-clear coral gardens, and Goa’s playful wrecks. Warm 26–30 °C waters, affordable PADI courses, and a vibrant topside culture of spice markets, temple towns, and beach cafés turn every surface interval into an adventure, while eco-minded operators champion reef-safe practices and marine conservation.