Islands in WalesWales

Large, low island of farmland ringed by a coast path, with Beaumaris Castle, sandy bays, seabird cliffs and prehistoric tombs

677 km² · Anglesey

Tidal island off Newborough beach with the ruins of St Dwynwen's church, a lighthouse, pilots' cottages and views to Eryri

0.26 km² · Anglesey

Wildlife Trust island off Marloes with puffins beside the paths, half the world's Manx shearwaters, its own vole and prehistoric field walls

2.9 km² · Pembrokeshire

Serpent-shaped tidal island off Rhossili, crossed via a rocky causeway at low tide, with seabirds, seals and a blowhole

0.12 km² · Swansea

Island off western Anglesey with Holyhead and its port, the seabird cliffs at South Stack, Holyhead Mountain and Trearddur Bay

35 km² · Anglesey

Tidal rock off Tenby's Castle Beach topped by a Victorian fort, open for visits in summer when the tide allows

Pembrokeshire

Pilgrimage island off the tip of Llŷn, Europe's first Dark Sky Sanctuary, with abbey ruins, a bird observatory and grey seals

1.8 km² · Gwynedd

Small tidal island at the north end of Rhossili Bay, with an Iron Age bank and the remains of a medieval chapel

Swansea

Monastery island off Tenby, with Cistercian monks, a medieval priory, a small village, a lighthouse and sandy Priory Bay

1.8 km² · Pembrokeshire

Wildlife Trust island at the mouth of the Teifi, with grey seals and nesting seabirds, seen from the Gwbert cliffs and boats

0.15 km² · Ceredigion

Bristol Channel island where Marconi sent the first radio signals over open sea, with Victorian gun batteries and a lighthouse

0.23 km² · Cardiff

Uninhabited island off Penmon Point with a ruined monastic tower, seabird ledges and grey seals, seen on cruises from Beaumaris

0.23 km² · Anglesey

RSPB island off St Davids with high sea cliffs, choughs, a heathland walk and a big grey seal pupping colony

2.5 km² · Pembrokeshire

Red sandstone island with Britain's first bird observatory, puffins, storm petrels and Manx shearwaters, visited only on stays of several nights

0.97 km² · Pembrokeshire

Small island beside Caldey holding Wales's largest cormorant colony and other cliff-nesting seabirds, seen on cruises from Tenby

Pembrokeshire