Keith Hodkinson from Sandilands discovered the shark-like fish washed up at low tide and sent in these photos which have left experts baffled.

A spokesperson for Lincolnshire Wildlife Trust said they were unable to confirm the species but added: "The fish could be a Tope, a species of shark which is widely distributed off the British coast."

The Tope shark, also known as Snapper Shark, can grow to around two metres in length and have typical shark-like serrated teeth and a greyish-brown dorsal fin.
They can live up to 55 years-old and are found all over the world from the coasts of California, USA, the South Africa and the British Isles.

Their food consists mostly of fish, with the occasional crustacean providing a tasty snack. They are considered harmless to humans.

Lincolnshire Wildlife Trust added: "The marine environment of Lincolnshire is vitally important for wildlife and is in urgent need of protection through the designation of Marine Nature Reserves. It's a case of out of sight out of mind and we're often not aware of what's living in our seas until it is washed up dead."