The Skerries (Welsh: Ynysoedd y Moelrhoniaid) (grid referenceSH268948), coming from the Old Norse word sker, are a group of sparsely vegetated rocky islets (skerries), with a total area of about 17 hectares (42 acres) lying 3 kilometres (1.9 mi) offshore from Carmel Head at the northwest corner of Anglesey, Wales. The islands are important as a breeding site for seabirds, and they attract divers, who come to visit the numerous shipwrecks. The Skerries Lighthouse sits atop the highest point in the islands.
The islands can be visited by charter boat from Holyhead. The individual islets are accessible from one another at low tide and by small bridges.
The name "Skerry" is the Scottish diminutive of the Old Norse "sker", and means a small rocky reef or island.[1] The Welsh name for these islands, 'Ynysoedd y Moelrhoniaid', means "Islands of the Seals".[2] An alternative name provided by some English-language sources is 'St Daniel's Isle'.[3]
Terns interchange regularly between all three sites, and form part of a larger Irish Sea tern population together with birds at sites in Ireland such as Rockabill Island. The islands are wardened by the RSPB during the tern breeding season, and management measures they have undertaken here include control of introduced tree mallow (Lavatera arborea) and provision of nestboxes; these measures as aimed particularly at helping to increase the attractiveness of the site to breeding roseate terns, although it is accepted that the future number of pairs of this species here is primarily dependent on the overall health of the Irish Sea population.
The site came to national attention among birders briefly in July 2005 when it attracted a sooty tern, a species which only a very small number of birders had previously seen in Britain.