DYFED-Powys Police is investigating a sexual assault that happened on Cefn Sidan beach in Pembrey on Tuesday, June 12 between 2-3pm.
A man approached a woman who was sunbathing and inappropriately touched her.
He was unknown to the victim and is described as being in his late forties, early fifties, around 5 foot 11inches tall, thin arms and legs with a pot belly. His hair was a mix of light and dark grey.
He had an English accent. He was believed to be wearing knee length black shorts and a pale blue T-shirt, but was not clothed at the time of the assault.
If any recognises this description of the suspect, or if anyone witnessed him at the relevant location on the date and time above contact DC 359 Hollie Thomas at JIU Llanelli by calling 101.