This is the moment two Cornishmen grappled with a giant crocodile in aid of research.
Luke Evans, of Goldsithney, Penwith, and Isaac Field, of Penryn, joined a team to capture and tag the monster – thought to be one of the biggest crocs ever caught – in Sabah, Malaysian Borneo.
The beast measured more than five metres long.
Mr Evans, 24, a former Mounts Bay Academy student who is in the country studying estuarine, or saltwater, crocodiles as part of his higher education research, said: "When we first saw the crocodile, it was in the trap and it was clear to me that it was going to measure in at more than five metres.
"The feeling was pure excitement, these are the kind of days that make me love my PhD.
"It's the third crocodile we have tagged in the Kinabatangan River in Sabah – this one was considerably larger than the other two."
The work is part of a continuing project being carried out as part of a study at Danau Girang Field Centre (DGFC), aiming to understand the long-term movements of the animals.
It took the combined efforts of a 12-man team to pull the animal from its trap before it was tagged.
"The 5.2-metre individual is, to our knowledge, the largest ever tagged, eclipsing the previous record of 4.65-metre carried out in Australia," said Mr Evans.
The team studied the crocodile, measured it and carried out other research before releasing it back into the wild.