Beddmanarch Bay is adjacent to Penrhos Coastal Park on Holy Island. It makes up part of the Beddmanarch and Cymyran Site of Special Scientific Interest (SSSI). 

One of the spectacles that can be observed from the bay is the sea water gushing through the flume in the Stanley Embankment, Thomas Telford’s feat of engineering which carries the A5, the A55 expressway and the North Wales railway line across the Inland Sea.

The bay is flanked by woodland, areas of scrub and amenity grassland, and there is a footpath that runs alongside the foreshore that leads to the Gorsedd y Penrhyn headland. There is also a nature walk through the woodland, and there are plenty of benches and picnic tables from which to admire the views over the bay and the gently undulating landscape beyond.

The foreshore is strewn with seaweed covered boulders and rock pools. It is a particularly good spot for observing waders and diving birds and other birds such as oystercatchers, grebes, mergansers, little egrets, and grey herons. The area is accessible by car from the large car park that lies directly off the A5 at the western end of the Stanley Embankment.

For a list of public toilets on the island, please see Isle of Anglesey County Council - public toilets