The shallow waters between Holy Island and mainland Anglesey comprise mudflats and sandflats with large areas of seagrass (unusual marine flowering plants) and areas of saltmarsh. These support a wide range of wintering water-birds, especially ringed plover, greenshank, red-breasted merganser and goldeneye. At both the northern and southern end are areas of rare dune heathland and the whole site supports a range in scarce plants such as sea lavender, dwarf rush and golden samphire.

Anglesey map

SSSI citation

Potentially Damaging Operations list

Site Management Statement

Vertical Aerial Photograph

Map reproduced by permission of Ordnance Survey ® on behalf of the Controller of Her Majesty's Stationery Office. © Crown copyright. All rights reserved. License number 100044910.