Scientists from the University of Western Australia and Tokyo University of Marine Science and Technology on Sunday published images of snail fish captured by marine robots last September in deep-sea trenches off Japan.
In addition to the video recordings, the scientists captured two snailfish specimens at a depth of 8,022 metres, setting a new record for the deepest catch.
The previous fish photographed in the deepest waters to date was also a snail, which was observed in 2008 at 7,703 metres. Scientists filmed in marine trenches off Japan as part of a 10-year study of the world’s deepest fish populations.
While most snailfish live in shallow waters, others live at the deepest depths ever recorded
– said Alan Jamieson, campaign leader.
During last year’s two-month survey, three “landing craft”—automated marine robots equipped with high-resolution cameras—were lowered into three offshore trenches at different depths.
Pictures of the two caught fish provide a rare glimpse into the unique properties that help deep-sea species survive in extreme environments. Their eyes are small, their bodies are transparent, and the advantage of not having a swim bladder helps other fish float, Jamison said.
Scientists want to know more about life at great depths, Jamison said, but the cost is limited, adding that each lander costs $200,000 to assemble and operate.
“The challenge is that the technology is very expensive and scientists don’t have a lot of money,” he said.
Cover image is illustrative. Source: Getty Images
