Deep-sea fish

Dear HIW, My brother and I love reading your magazine. We were wondering what fish lives deepest in the ocean? And do we keep any in zoos? Thank you,

The deepest-living fish researchers have ever recorded was the Mariana snailfish, found 8,178 metres below sea level in the Mariana Trench. Deep-sea species aren’t usually kept in aquariums because we can’t easily replicate the high-pressure conditions they need to survive. However, in 2012 French scientists built a special enclosure called the Abyssbox to study deep-sea crabs and shrimp.

Submersibles are often used to examine creatures in the ocean depths