CNN ONLINE

Cruising at a depth of 8,336 metres (over 27,000 feet) just above the seabed, a young snailfish has become the deepest fish ever filmed by scientists during a probe into the abyss of the northern Pacific Ocean.

Scientists from University of Western Australia and Tokyo University of Marine Science and Technology released footage of the snailfish on Sunday filmed last September by sea robots in deep trenches off Japan.

Along with the filming the deepest snailfish, the scientists physically caught two other specimens at 8,022 metres and set another record for the deepest catch.

Previously, the deepest snailfish ever spotted was at 7,703 metres in 2008, while scientists had never been able to collect fish from anywhere below 8,000 metres.

“What is significant is that it shows how far a particular type of fish will descend in the ocean,” said marine biologist Alan Jamieson, founder of the Minderoo-UWA Deep Sea Research Centre, who led the expedition.

Scientists are filming in the trenches off Japan as part of a 10-year study into the deepest fish populations in the world. Snailfish are members of Liparidae family, and while most snailfish live in shallow water, others survive at some of the greatest depths ever recorded, Jamieson said.

During the two-month survey last year, three “landers” – automatic sea robots fitted with high-resolution cameras – were dropped into three trenches – the Japan, Izu-Ogasawara and Ryukyu trenches – at varying depths.