Abereiddy Bay
Pembrokeshire
The same slate gives a deep blue colour to the water in the “Blue Lagoon”, a beautifully sited flooded slate quarry, past ruined quarry buildings and slate-workers cottages. There is good wheelchair-accessible path access to the beach and the Blue Lagoon. Popular activities here include snorkeling, diving and kayaking and children enjoy hunting for tiny fossils, known as graptolites which may be found on the beach.