Not realising how dangerous it was, he began to dig up the object which was poking through the waves. Mr Bendall initially thought he had found a copper bracelet stuck around a rock (Image: Paul Bendall)"It wasn't until it was in my hands that I realised, 'Oh my God, it's an unexploded shell.' Paul Bendall discovered the unexploded artillery shell after going for a swim in Mupe Bay (Image: Paul Bendall)He also alerted other people on the beach, telling them to leave the area, and contacted Dorset Police. Paul, who previously worked as a PE teacher in Dorchester, has been visiting Mupe Bay for about 50 years and says he has never found anything like this before. Mupe Bay sits within the Lulworth military training area, part of the Ministry of Defence's (MoD) coastal ranges.