A series of graphic pictures have been released showing experts carrying out a post-mortem on a beached whale.
The 40ft giant sperm whale died on Sunday after it became stranded at Perranporth Beach in Cornwall.
Marine experts were unable to save the young female due to its size and because it had been out of the water for too long.
But a two-day post-mortem on the seven-tonne whale has now taken place.
The images from the the ZSL Insitute of Zoology show its team from its Cetacean Strandings Investigation Programme (CSIP) conducting the tests.
The whale, which was described as 'in-tact' upon arrival first had its blubber layer removed to enable visceral organ examinations to take place.
Experts then began examining its organs and were surprised to discover it was a female.
The investigation is taking place to establish how the young whale died and then the operation to remove her body will begin.
It is important to deal with the body before it begins to decompose - which can be unpleasant and there have also been occasions when the gases cause beached whales to explode.