Cardigan Bay (Bae Ceredigion) is a major embayment of St George's Channel on the west coast of Wales bounded by St David's Head in the south and the Llŷn Peninsula to the north with a shoreline that extends from south to north along the coast of the counties of Pembrokeshire (Sir Benfro), Ceredigion and Gwynedd.

Exploring the post-glacial history of the Cardigan Bay coast and sites of sediment accumulation.