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Shifted Ice Cap Unexpectedly Reveals Life
Beginning on January 31, 2002, a huge section of the Larsen Ice Shelf in Antarctica broke off and floated away. Scientists used a robotic vehicle to look at what was under the shelf and have discovered huge mats of bacteria as well as clams surrounding a mud volcano vent. This vent is a cold seep, a rare phenomenon (and the first found in the Antarctic) where methane gas bubbles up from under the seabed. The methane gas reacts with seawater to produce sulfide, upon which the bacteria mats feed. The clams are thought to have bacteria in their gills, turning sulfide into food. This audio clip is 3 minutes and 15 seconds in length.
Intended for grade levels:
  • General public
Type of resource:
  • Audio:
    • Radio broadcast
Subject:
  • Ecology
  • Ocean Sciences:
    • Biological oceanography
Technical requirements:
Real player or Windows Media player is required
Cost / Copyright:
No cost
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DLESE Catalog ID: DLESE-000-000-008-388
Resource contact / Creator / Publisher:
Publisher: National Public Radio, All Things Considered Radio Series
http://www.npr.org/

Author: Christopher Joyce
National Public Radio, All Things Considered Radio Series