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Grassholm is a small uninhabitated island, lying 8 miles offshore, due west of Skomer.

Since 1947 the island has been owned by the RSPB, and it is one of their oldest reserves.

Grassholm is famous for its population of Gannets. It is the third most important site in the world for these birds, with 39,000 breeding pairs – around 10% of the entire world population.

The turbulent waters surrounding Grassholm provide excellent feeding grounds for Porpoise and Dolphins, and huge numbers of Seals can be seen hauled out on rocks and swimming around the island.

The island also has small numbers of fulmars, kittiwakes, guillemots, and razorbills.


We offer a selection of ways to experience Grassholm Island:

Join us on one of our weekly Grassholm Cruises (Monday 1pm) on board the Dale Princess, or join us on one of our ‘Grassholm Gannetry Experiences‘, which run daily on our Sea Safaris. Alternatively, arrange your own Private Charter and include a visit to Grassholm as part of your unique tailor made trip.