Posted on 02/03/2005 12:21:09 PM PST by 68skylark
WASHINGTON (AP) - Tiny single-celled organisms, many of them previously unknown, have been discovered beneath nearly seven miles of water in the deepest part of the ocean.
A sample of sediment collected from the Challenger Deep southwest of Guam in the Pacific Ocean Islands yielded several hundred foraminifera, a type of plankton that is usually abundant near the ocean surface.
"On the species level, all the species we found from the Challenger Deep are quite new," researcher Hiroshi Kitazato said vie e-mail.
The outer shapes are similar to other known foraminifera, but details of their structure differ, explained Kitazato, of the Institute for Research on Earth Evolution, Japan Agency for Marine-Earth Science and Technology.
"I am very surprised that so many very simple, soft-shelled foraminifera are dwelling at the deepest point of the world ocean," he added.
"It is also exiting that most of the group belong to the oldest branch of foraminifera," he added, suggesting that these deep locations may form some sort of refuge for them.
These distinct creatures probably represent the remnants of a deep-dwelling group that was able to adapt to the high pressures, the researchers suggest in reporting the find. Their discovery is reported in this week's issue of the journal Science.
Because the water is so deep, the pressure where the find was made is 1,100 times more than normal atmospheric pressure at the surface.
While many foraminifera have hard shells, the researchers noted that this newly found group does not.
Similar, though not identical, groups have been found in other, slightly shallower, ocean trenches, they note.
The creatures probably can exist by ingesting particles of organic matter that drift down from above or materials that are dissolved in the seawater, Kitazato said.
The research was funded by the Japan Agency for Marine-Earth Science and Technology, the Japan Society for Promotion of Science, the Kaplan Foundation and the Natural Environment Research Council.
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On the Net:
Science: http://www.sciencemag.org
Japan Agency for Marine Earth Science and Technology: http://www.jamstec.go.jp
Well my mind is now officially in the gutter:)
Here I thought we were going to read something like shades of "The Abyss".
PH-is this worth pinging the crevo list for?
That's what's meant by "occupying a niche."
Don't feel bad, I thought it said orgasms.
Organisms not ORGASMS, planckton breath. lol :-)
nikos
Dang. I thought it was Ted Kennedy who was lower than whale feces.
:-)
*raises hand*
Yes, The ORGAniSMS were found in the deepest, darkest, wettest, most vulnerable part of the ocean where man had thrust his long hard probe for the last vestiges of life ......
WOW, what a place to have sex
Yeah, it's interesting. I'll ping the list. (How do I make these decisions?)
At least it's not trying to survive in an overgrown Marin County culvert...
I understand the trip down was a REALLY hairy experience!
Future Democrat voters? Paging Mr. Dean, please pick up the white courtesy phone...
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Well, if chlamydia and other bacteria can exist in Paris Hilton, I don't see why this is so surprising.
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