West Pembrokeshire, Abereiddy, near St David’s, SA62 6DT
A sheltered, black shingle and pebble beach with the picturesque Blue Lagoon on the cliffs nearby, which is popular with coasteering enthusiasts. It’s a lovely spot for a picnic and a doggy swim but for a coastal treat follow the path from Abereiddy to Porthgain (approx. 3 miles). Alternatively take the longer trail in the other direction to Whitesands Bay (approx. 7 miles).