Carmarthen Bay

Carmarthen Bay, inlet of the Bristol Channel, Dyfed, south Wales; it is approximately 43 km (27 mi) long and originally formed by deglaciation drowning a number of rivers. Caldy Island is at the Bay's western entrance; on the east is the Gower peninsula, and the Burry Inlet leading to Llanelli. The bay receives the rivers Taf and Towy in the area around Carmarthen, and the River Loughor east of Llanelli. Large sand flats are uncovered at low tide, and most of the rest of the bay is less than 25 m (80 ft) deep.