Nasa finds shrimp under ice

2010-03-15 22:38
This image shows a Lyssianasid amphipod, which is related to a shrimp, capured by a Nasa video camera under an Antarctic ice sheet.

This image shows a Lyssianasid amphipod, which is related to a shrimp, capured by a Nasa video camera under an Antarctic ice sheet.

Multimedia   ·   User Galleries   ·   News in Pictures Send us your pictures  ·  Send us your stories

Washington - In a surprising discovery about where higher life can thrive, scientists for the first time found a shrimp-like creature and a jellyfish frolicking beneath a massive Antarctic ice sheet.

183m below the ice where no light shines, scientists had figured nothing much more than a few microbes could exist.

That is why a team from the National Aeronautics and Space Administration (Nasa) was surprised when they lowered a video camera to get the first long look at the underbelly of an ice sheet in Antarctica. A curious shrimp-like creature came swimming by and then parked itself on the camera's cable. Scientists also pulled up a tentacle they believe came from a foot-long jellyfish.

"We were operating on the presumption that nothing's there," said Nasa ice scientist Robert Bindschadler, who will be presenting the initial findings and a video at an American Geophysical Union meeting on Wednesday. "It was a shrimp you'd enjoy having on your plate."

Shrimp on Europa?

"We were just gaga over it," he said of the 76mm-long, orange critter starring in their two-minute video. Technically, it's not a shrimp. It's a Lyssianasid amphipod, which is distantly related to shrimp.

The video is likely to inspire experts to rethink what they know about life in harsh environments. And it has scientists musing that if shrimp-like creatures can frolic below 183m of Antarctic ice in subfreezing dark water, what about other hostile places? What about Europa, a frozen moon of Jupiter?

"They are looking at the equivalent of a drop of water in a swimming pool that you would expect nothing to be living in and they found not one animal but two," said biologist Stacy Kim of the Moss Landing Marine Laboratories in California, who joined the Nasa team later. "We have no idea what's going on down there."

Microbiologist Cynan Ellis-Evans of the British Antarctic Survey called the finding intriguing.

Oceanic mysteries

"This is a first for the sub-glacial environment with that level of sophistication," Ellis-Evans said. He said there have been findings somewhat similar, showing complex life in retreating ice shelves, but nothing quite directly under the ice like this.

Ellis-Evans said it is possible the creatures swam in from far away and do not live there permanently.

But Kim, who is a co-author of the study, doubts it. The site in West Antarctica is at least 20km from open seas. Bindschadler drilled a 200mm hole and was looking at a tiny amount of water. That means it's unlikely that those two critters swam from great distances and were captured randomly in that small of an area, she said.

Yet scientists were puzzled at what the food source would be for these critters. While some microbes can make their own food out of chemicals in the ocean, complex life like the amphipod can't, Kim said.

So how do they survive? That's the key question, Kim said.

"It's pretty amazing when you find a huge puzzle like that on a planet where we thought we know everything," Kim said.

- AP
Read more on:    nasa  |  antarctica  |  science  |  animals
NEXT ON NEWS24X
SHARE:

Read News24’s Comments Policy

24.com publishes all comments posted on articles provided that they adhere to our Comments Policy. Should you wish to report a comment for editorial review, please do so by clicking the 'Report Comment' button to the right of each comment.

Comment on this story
17 comments
Add your comment
Comment 0 characters remaining
 

Inside News24

 
/Music

Jobs in Cape Town [change area]

Property [change area]

Travel - Look, Book, Go!

Magical Massinga

Spend 5 nights at the gorgeous Massinga Beach Lodge in Mozambique and only pay for 4 from R13 220 per person sharing. Includes return flights, accommodation, transfers and romantic turndown. Book now!

Kalahari.com - shop online today

Up to 40% off fashion accessories

Save up to 40% on selected handbags, purses, watches, jewellery and more. Offer valid while stocks last. Shop now!

Save up to R2000 on top electronics

Get every day mind bowing savings on top electronics. Offer valid while stocks last. Shop now!

As seen on TV - New book releases at only R199 each

Get mind blowing book savings on new titles. Offer valid while stocks last. Shop now!

Save up to 50% on Women’s month treats!

Celebrate the awesome women in your life with awesome treats like beauty products, fashion accessories, bestselling books, electronics and more. Offer valid while stocks last. Shop now!

Up to 60% off - clearance sale!

Save up to 60% on appliances, books, electronics, toys, movies and more. Offer valid while stocks last. Shop now!

OLX Free Classifieds [change area]

Samsung Galaxy s4

Mobile, Cell Phones in South Africa, Western Cape, Cape Town. Date October 24

Best bargain in big bay

Real Estate, Houses - Apartments for Sale in South Africa, Western Cape, Cape Town. Date October 25

VW Golf 6, 1.6 Trendline (Excellent condition)

Vehicles, Cars in South Africa, Western Cape, Cape Town. Date October 25

Horoscopes
Aquarius
Aquarius

The virtual world can be very tempting to escape into but focus on also being present and keeping your feet anchored in reality....read more

There are new stories on the homepage. Click here to see them.
 
English
Afrikaans
isiZulu

Hello 

Create Profile

Creating your profile will enable you to submit photos and stories to get published on News24.


Please provide a username for your profile page:

This username must be unique, cannot be edited and will be used in the URL to your profile page across the entire 24.com network.

Settings

Location Settings

News24 allows you to edit the display of certain components based on a location. If you wish to personalise the page based on your preferences, please select a location for each component and click "Submit" in order for the changes to take affect.








Facebook Sign-In

Hi News addict,

Join the News24 Community to be involved in breaking the news.

Log in with Facebook to comment and personalise news, weather and listings.