They can’t really see, and they don’t need to, that far from any sunlight. The Mariana snailfish lives at depths between 6,000 and 8,000 meters (3.7 to 5 miles) under the ocean’s surface.

The Mariana snailfish, aka the deepest fish ever discovered, which scientists have seen more than 8,000 meters down. And there are a lot of strange things about these fish. They have flexible ...

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An expedition to the depths of the ocean has led Western Australian scientists to help reel in a fish from a record-breaking depth of more than 8000 metres.