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Deepest fish ever caught on camera off Japan

bbc.co.uk

81–84 of 84 posts

Re: Deepest fish ever caught on camera off Japan

#81

I just recently read the Brilliant Abyss[0] and it was a really interesting look at the deep ocean and the complexity of life down there. If this kind of thing interests you at all, I highly recommend it. I didn’t know much going in, but found it fascinating. [0]: https://helenscales.com/portfolio/the-sea-beneath-us/

[deleted]

Re: Deepest fish ever caught on camera off Japan

#82

I just recently read the Brilliant Abyss[0] and it was a really interesting look at the deep ocean and the complexity of life down there. If this kind of thing interests you at all, I highly recommend it. I didn’t know much going in, but found it fascinating. [0]: https://helenscales.com/portfolio/the-sea-beneath-us/

[deleted]

Re: Deepest fish ever caught on camera off Japan

#83
post #32

Earlier quoted context omitted.

Water is incompressible, so I think it should behave similarly. Even viscosity remains within a few precent [1] (Mariana Trench is around 100 MPa) [1] https://www.engineeringtoolbox.com/absolute-dynamic-viscosit...

Interesting. Thanks! Upon doing some searching it seems that the water at the bottom of the Mariana Trench is just 5% more dense. I didn't realize that water was that resistant to being compressed.

Most fluids are pretty resistant to compression. That's what makes them so good for hydraulics, for example brake lines, etc.... by putting fluid in a tube, you can apply pressure at one end and bend it around all kinds of crazy corners and curves and get the same pressure applied on the other end.

Re: Deepest fish ever caught on camera off Japan

#84
post #3

If you ever wondered how they survive the pressure, from wikipedia: TMAO (Trimethylamine N-oxide) is found in the tissues of marine crustaceans and marine fish, where it prevents water pressure from distorting proteins and thus killing the animal. The concentration of TMAO increases with the depth at which the animal lives; TMAO is found in high concentrations in the deepest-living described fish species, Pseudolipar…

An interesting case of evolution. In theory the first populations to become fixed for an allele or allelic combination that results in even a small increase in TMAO would be able to access previously untouched feeding grounds and flourish for some time.

Probably also avoid predators, since they seem to be pretty much by themselves down there.
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