Dublin Bay Dive Sites

Dublin Bay is one of the most underrated, vibrant, and historically rich diving locations in northwestern Europe. For decades, local clubs, hard-working volunteers, and passionate divers have logged, explored, and protected an incredible underwater world right on our capital's doorstep.

From the world-class deep steel wrecks resting out in the shipping lanes to the shallow, sunlit granite gullies of Dalkey Island, our coast holds a staggering amount of biodiversity.

This interactive map is built strictly as a resource for the Dublin diving community and anyone interested in learning about what lies beneath the surface of the Irish Sea.

Understanding the Bay

As any East Coast diver knows, our waters are dynamic. Due to the massive tidal streams running through the narrow channels and around the sandbanks, conditions change rapidly.

  • The Shore Sites: Areas like Sandycove Beach offer accessible training grounds, but require divers to stay strictly clear of swimmer zones and local harbor traffic.

  • The Reefs & Walls: Features like the Muglins and Maiden Rock offer dramatic, hyper-colorful vertical drop-offs carpeted in anemones, but require precise planning around slack water window safety.

  • The Offshore Wrecks: The shipping lanes hold beautifully preserved pieces of history, from WWI armed drifters to massive colliers, sitting in deeper, current-heavy water.

Explore the Map: Click on any pin below to view localised depths, marine profiles, historical wreck context, and general experience suitability. Use it to map out a new site, study the local coastal topography, or simply learn more about the incredible underwater ecosystem of Dublin Bay.

Disclaimer, Safety & Legal Requirements

Personal Responsibility & Dive Planning: Coordinates may be incorrect, use at your own risk. This map is intended strictly as a general guide and an educational tool to share knowledge about Dublin Bay's underwater topography. It does not replace formal training, official nautical charts, or up-to-date local weather and tidal data. Every diver is entirely responsible for their own safety. You must independently plan your dive, monitor the slack water windows, evaluate the daily conditions, and dive strictly within the limits of your certification and fitness level.

Protected Wrecks & National Monuments: Please be aware that several wrecks within Dublin Bay and the wider Irish Sea are protected under the National Monuments Acts.

  • Any vessel that has been on or in the seabed for over 100 years is automatically classified as a historic wreck.

  • Diving, surveying, or filming these sites—or using underwater detection equipment near them—strictly requires a formal Dive Licence issued by the National Monuments Service (NMS).

  • It is a serious legal offense to look for, disturb, or remove any artifacts from these historic sites. Look, admire, and respect our maritime history, but leave everything exactly as you found it.