Beddmanarch–Cymyran
| Site of Special Scientific Interest | |
Low tide at Traeth y Gribin | |
| Location | West Gwynedd |
|---|---|
| Grid reference | SH 275 790 |
| Coordinates | 53°17′00″N 4°35′16″W / 53.28345°N 4.5879°W |
| Interest | Biological |
| Area | 911 hectares (2,250 acres) |
| Notification | 1961 |
Beddmanarch–Cymyran is a site of special scientific interest (SSSI) on the Welsh island of Anglesey extending to just over 900 hectares (2,200 acres), and centred on the Cymyran Strait. It was first notified in 1961 for its coastal botanical and ornithological interest. The site is also a marine protected area as it includes intertidal areas and contains marine components.