Scientists have captured a deep-sea fish (Pachycara saldanhai) at a record depth of 2,300m (7,546ft) around a hydrothermal vent.
A new device called a Periscop kept the animal at its natural pressure, preventing decompression, as it was pulled up through the water.
This enabled the team to study the creature's behaviour back on the surface.
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Video courtesy of B. Shillito