“I knew that it was a casing for a whelk. There’s eggs in there before it dries out. I didn’t really know until I googled it,” Wappler said. She uses the shells she collects to make ar ...

A team at Swansea University has been testing whelk shells which are a by-product at a Ceredigion food company. Ground down shells are abrasive, so lend themselves to be used in cleaning products ...