Coordinates: 53°25′19.2″N 4°36′29″W / 53.422000°N 4.60806°W
The Skerries (Welsh: Ynysoedd y Moelrhoniaid) (grid reference SH268948) 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. The Welsh name for these islands, Ynysoedd y Moelrhoniaid, means "the Islands of Bald-headed Grey Seals".
The islands have a seabird colony, which is particularly important for the Arctic tern, numbers of which are nationally important; the roseate tern breeds occasionally in very small numbers. The following species also breed: Atlantic puffin, black-legged kittiwake, common tern, herring gull and lesser black-backed gull.