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Deepest Fish ever filmed

 
 
Reply Tue 7 Oct, 2008 12:32 pm
'Deepest ever' living fish filmed
The "deepest ever" living fish have been discovered, scientists believe.


Quote:

http://newsimg.bbc.co.uk/media/images/45085000/jpg/_45085137_fish_226226.jpg

A UK-Japan team found the 17-strong shoal at depths of 7.7km (4.8 miles) in the Japan Trench in the Pacific - and captured the deep sea animals on film.

The scientists have been using remote-operated landers designed to withstand immense pressures to comb the world's deepest depths for marine life.

Monty Priede from the University of Aberdeen said the 30cm-long (12in), deep-sea fish were surprisingly "cute".

"No-one has ever seen fish alive at these depths before - you just never know what you are going to see when you get down there."

The deepest record for any fish is Abyssobrotula galatheae, which was dredged from the bottom of the Puerto Rico Trench at a depth of more than 8km (5 miles) in 1970. However, it was dead by the time it reached the surface.

The previous record for any fish to have been spotted alive was thought to have stood at about 7km (4 miles).


There's video and more with the article, check it out.
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Type: Discussion • Score: 4 • Views: 1,282 • Replies: 8
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OmSigDAVID
 
  1  
Reply Tue 7 Oct, 2008 12:38 pm
WoW
Those little fellows have a lot of presure on them.
mismi
 
  1  
Reply Tue 7 Oct, 2008 01:01 pm
@OmSigDAVID,
They look kind of like tadpoles
0 Replies
 
littlek
 
  1  
Reply Tue 7 Oct, 2008 05:58 pm
@Robert Gentel,
I love this kind of info, thanks Robert!
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JTT
 
  1  
Reply Tue 7 Oct, 2008 06:02 pm
@Robert Gentel,
Quote:
The scientists have been using remote-operated landers designed to withstand immense pressures ...


And these little fellas/gals do it how?
Mr Stillwater
 
  1  
Reply Tue 7 Oct, 2008 07:16 pm
@JTT,
Quote:
And these little fellas/gals do it how?


Actually, it's not that hard. They (like almost all living creatures) are mostly water - the stuff is incompressible. No amount of additional pressure will affect water at that limit already. Everything else would be bone - though there would not be any sort of cavities or sinuses to hold air.

When the bathyscape ('deep ship') Trieste landed at the bottom of the Marianas Trench - Challenger Deep - in 1959 they reported disturbing fish there. There is no limit to the depth that fish would be able to adapt to.
JTT
 
  1  
Reply Tue 7 Oct, 2008 07:38 pm
@Mr Stillwater,
Thanks, Mr S.
0 Replies
 
JTT
 
  1  
Reply Tue 7 Oct, 2008 08:00 pm
About 845 atmospheres by my reckonin'. That's 12,418 pounds per square inch, is it not? There must be some really interesting things done to one's physiology even when one has adapted.
Mr Stillwater
 
  1  
Reply Wed 8 Oct, 2008 01:34 am
@JTT,
What is of more interest is that there must be enough dissolved oxygen even at this depth. And things to eat, assuming they don't eat each other. Any lifeform that relies on photosynthesis gives up the ghost in the first few metres.
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