This video is called The Blue Planet - Deep Sea Pt.1.
From the BBC:
Live fish caught at record depthVideo about this is here.By Anna-Marie Lever
Science and Nature reporter, BBC NewsA live deep-sea fish has been caught at a record depth of 2,300m on the hot vents of the Mid-Atlantic Ridge.
Three shrimp species were also pulled to the surface, researchers report in the journal Deep-Sea Research.
Scientists have engineered a new device that allows recovery of live animals under their natural pressure at greater depths than previously achieved.
Next they hope to be able to transfer the animals into an experimental lab to study their normal biology.
“Pressurised recovery has been around for the past 30 years, but this is the deepest fish-capture under pressure - the previous record was 1,400m. This is also the first time pressurised capture has occurred at a hydrothermal vent,” said Dr Bruce Shillito, marine biologist at the Universite Pierre et Marie Curie, Paris, France.
The shrimp species were caught at 1,700m (5,600ft; Mirocaris fortunata and Chorocaris chacei) and 2,300m (7,500ft; Rimicaris exoculata) at two vent fields, Lucky Strike and Rainbow, on the Mid-Atlantic Ridge.
Dr Shillito explains: “At depths of over 1,000m, it is difficult to recover animals alive. Catching with no pressure is as good as catching dead. Fish are the most fragile - even a fisherman with a 100m line will probably reel in a catch whose gas bladder is in its mouth.”
Although the fish caught by the team was a zoarcid (Pachycara saldanhai) and had no gas bladder, it was sensitive to full decompression.
