Relict estuary landform defined as a partially enclosed coastal body of brackish water with one or more rivers or streams flowing into it and a free connect to the open sea/ocean. Where know the type of estuary (e.g. fjord, estuary, ria) is included. Chronological information is presented as calendar age BP. Confidence is defined as follows: 1. High: Sampled feature with good age and palaeoenvironmental control. 2. Sampled feature with poor or none age and palaeoenvironmental control. 3. Constructed by remote sensing data only. 4. Low: Reasonable without any direct evidence.