Fossil collectors have been using angle grinders and rock saws to excavate large ammonites from a protected beach.
Geologists in Watchet, Somerset, are asking people to be more responsible when gathering fossils from the bedrock at Doniford beach.
The marine fossils found embedded in the cliff and bedrock are estimated to be around 197 million years old.
This section of coastline is a site of special scientific interest (SSSI) and is protected by law.
But is it OK to take fossils home?
Video journalist: Andy Roberts
