
The Rockabill to Dalkey Island Special Protection Area is a coastal marine reserve known for its vital seabird colonies and rich marine biodiversity, offering unique wildlife viewing opportunities in the Dublin Bay area.
The Rockabill to Dalkey Island Special Protection Area (SPA) encompasses a stretch of coastal habitat in Dublin Bay, Ireland, including the offshore islands of Rockabill and Dalkey Island along with the surrounding marine and intertidal zones. This protected area is critically important for the conservation of internationally significant seabird populations, notably the largest tern colony in Ireland, featuring Arctic Terns, Roseate Terns, and Common Terns. Rockabill Island, situated north of the Irish Sea coastline, is home to a large, thriving tern colony sheltered from mainland predators, while Dalkey Island supports a diverse seabird community and has historical landmarks like prehistoric forts and medieval structures that add cultural interest to the natural setting. The area’s rich marine environment provides foraging grounds for the birds and is vital for their breeding success. Visitors are drawn to this distinctive coastal environment for birdwatching, guided boat tours around the islands, and appreciating the rugged scenic beauty of Dublin’s seaboard. The SPA not only serves as a refuge for wildlife but also plays an important role in marine conservation and environmental education. Access to the islands is usually by private boat or organised tours, allowing visitors to experience the habitat while minimizing disturbance. The combination of ecological value, cultural heritage, and proximity to Dublin city makes Rockabill to Dalkey Island SPA a significant location for conservation and outdoor nature experiences in Ireland.
Rockabill Island tern colony – home to Ireland’s largest breeding population of Roseate and Arctic Terns
Dalkey Island’s rich seabird diversity including gulls, cormorants, and shags
Stunning coastal and marine landscapes visible from boat tours
Historic sites on Dalkey Island including a Martello tower and ancient forts
Supports one of the largest Roseate Tern breeding populations in Ireland, an internationally important seabird conservation site.
Features prehistoric and medieval structures offering insight into historical human settlement amid vibrant wildlife habitat.
The surrounding waters provide critical feeding grounds for seabirds and support abundant marine life.