It roamed the English channel more than 200 million years ago.
And now the prehistoric monster has surfaced once more – in the limestone of Lyme Regis’s famous ‘Jurassic Coast’.
Excited archaeologists discovered the Loch Ness-style creature on the beach and have spent months piecing together a giant jigsaw composed of dozens of old bones to reveal the 12ft-long plesiosaur.
The marine reptile hunted the oceans with a long thin neck and tail, four large flippers and razor-sharp teeth.
It existed during the Jurassic period about 150 to 200 million years ago when what is now the Channel was a shallow, tropical sea.
The remains were discovered by fossil hunter Tracey Marler under rocks on Monmouth Beach near Lyme Regis, Dorset.
She first found a single bone in limestone. She and partner Chris Moore, an expert in fossils, returned to the scene and they found four more bones.
As experts examined the bones in detail, they were surprised to see teeth marks from where a predator dinosaur would have feasted on the carcass of the ‘lake monster’.