A sperm that was seen swimming dangerously close to the coast in Northumberland died.
The whale was spotted along the coast on Friday afternoon in shallow water in Newbiggin-by-the-Sea.
A postmortem will be held on the 30-ton whale to find out why she died.
The whale was dangerously close to the shore
Members of the public were warned to stay away from the body
On Friday, a spokesman for the British Diving Sea Life Rescue (BDMLR) said the 13.3 million-meter young male "probably won't survive" due to lack of food.
Images of sperm whales in British waters are "very rare," the spokesman added.
Sperm whales are the largest toothed whales, and are not often seen in the North Sea because they lack the giant, colossal squid they usually feed on.
Tropical waters are a more natural habitat for them.
The whale appeared in Newbiggin-by-the-Sea
A BDMLR spokesman said this morning: "It is very important to note that cetaceans (whales, dolphins and porpoises) are mammals like us humans and therefore capable of carrying serious diseases that can be transmitted between us.
"We advise members of the public to avoid all contact with the carcass and any body fluids to avoid any risk of infection by them – there is a possibility that this animal was already sick.
"Incidents like this often attract crowds and we ask people to respect this situation and the advice given."