People are being urged to stay away from the crumbling Birnbeck Pier in North Somerset.
Weston-super-Mare's lifeboat crew rescued three people on Wednesday (April 29) evening after they were cut off by the tide. It's the fourth time they've had to carry out a rescue from Birnbeck Island in ten days.
Weston Seafront rangers, Avon and Somerset Police and Weston-Super-Mare Coastguard Rescue Team all helped in Wednesday's incident, as well as the RNLI crew.
The RNLI says the lives of emergency service workers are also being put at risk.