Visitors to the coast are being warned about the dangers of walking on unstable ground.
It comes after a family had to be rescued when they got stuck in mud in east Dorset.
They were hauled to safety by firefighters and coastguards.
Rescuers said the family had a lucky escape.
If you should become stuck in mud, Dorset & Wiltshire Fire and Rescue Service has the following advice:
- Stay calm, spread your arms and legs wide apart and shout for help
- Get someone to call 999
- Do not stand upright or attempt any movement as this makes you sink even more quickly
- If you see someone stuck in the mud, always go for help – do not go into the mud yourself