A dead marine mammal has been discovered on a beach.

The carcass - believed to be a harbour porpoise - was discovered by a passerby in Greatstone-on-Sea, near New Romney, on the shoreline yesterday.

Kent Wildlife Trust say: "Harbour porpoises can be spotted close to shore in relatively shallow water, especially in tidal races and around headlands.

"They are usually solitary or in small feeding groups of up to 10. They are pretty shy and will avoid boats and jetskis - though they are known to be more curious in some areas around the UK.

"Harbour porpoises give birth to a small calf every one to two years, normally in early summer.

"Look out for a small, triangular dorsal fin breaking the surface. Harbour porpoise are small and stocky, with a dark grey back and lighter underbelly. Their faces are rounded and have no beak."

Harbour porpoises are common in UK waters but they do face threats from water pollution including litter and plastic, noise from shipping which can disorientate them, and fishing nets which they can become entangled in.

They are sometimes confused with dolphins by non-experts.

Folkestone and Hythe District Council have been contacted for comment.

Read more: All the latest news from Romney Marsh