Police are investigating claims that a man tried to sell the bones and teeth of a whale found dead on a beach.
The sperm whale was discovered on Old Hunstanton beach in north Norfolk on Christmas Eve and has drawn crowds of visitors.
Its lower jaw and teeth were removed within hours of it washing up.
Norfolk Police have confirmed they are investigating a west Norfolk man who created a Facebook page advertising the body parts for sale.
People are also being urged not to touch the sperm whale, or allow their dogs to contact it directly, as it is decomposing on the sand.
The Health Protection Agency and Food Standards Agency have issued a joint statement which also warns water sports enthusiasts to stay away from the area.
It said: "Water sports enthusiasts, including bathers, should be aware that water quality could be affected and if you become unwell after using the water please seek medical advice."
Sperm whales are a protected species and removing anything from a body for trade or sale is illegal.