Video report by ITV News Science Correspondent Alok Jha
The deepest part of the world's oceans has been caught on camera for the first time.
A remotely operated vehicle fitted with a camera is currently scouring parts of the 10,994 metre deep Mariana Trench, located in the western Pacific Ocean.
It is probably the world's most remote place; in fact more people have walked on the moon than travelled down so deep.
The cameras have descended to depths of around six and a half miles (4,064 metres).
The exploration vessel has been filming down there for several weeks now and, in the scientific community, these are apparently the must see pictures of our time.