Police have urged people to stay away from a 40-foot (12-meter) long whale, believed to be a juvenile, that washed up dead on a beach in southeast England.

Images posted on social media show the giant mammal, thought to be a fin whale, on its back very close to a sandy shore in Clacton-on-Sea, Essex, on Friday.

A view of a 40 foot-long whale that has washed up on the beach at Clacton-on-Sea in Essex, England, Friday, May 29, 2020. The giant marine mammal, which has died, swept to shore on Friday. (Joe GiddensPA via AP)

A view of a 40 foot-long whale that has washed up on the beach at Clacton-on-Sea in Essex, England, Friday, May 29, 2020. The giant marine mammal, which has died, swept to shore on Friday. (Joe GiddensPA via AP)

The British Divers Marine Life Rescue charity said the whale appeared small for the species and said it believed the mammal to be a juvenile.

The Maritime and Coastguard Agency said officers were called to the scene after reports of a “large object” on the beach early Friday.

Essex Police said the area has been cordoned off and it was working with others to plan how to remove the whale.

A view of a 40 foot-long whale that has washed up on the beach at Clacton-on-Sea in Essex, England, Friday, May 29, 2020. The giant marine mammal, which has died, swept to shore on Friday. (Joe GiddensPA via AP)

A view of a 40 foot-long whale that has washed up on the beach at Clacton-on-Sea in Essex, England, Friday, May 29, 2020. The giant marine mammal, which has died, swept to shore on Friday. (Joe GiddensPA via AP)

The fin whales is the second-largest mammal in the world, after the blue whale. It has a distinct ridge along its back which gives it the nickname “razorback.” It is classed as endangered by the World Wide Fund for Nature.