Thanks to Steve for this one. He says “My wife Daphne took this last week at Thrupp Lake (Radley Lakes). The local fishermen blame the absence of fish there on the abundance of Cormorants, but having seen this monster I think he’s to blame. It’s a Red Eared terrapin from North America. Apparently they were all the rage a few years ago during The Teenage Mutant Ninja Turtle craze. But when people realised how big they got they disposed of them by chucking them in rivers, lakes and ponds. They have a diet of frogs and their spawn, eels, fish, ducklings and eggs.”