PHOTOGRAPHS

shell.tif (947278 bytes)
A helmet conch shell (left) and a queen conch shell rest on a ship’s hawser, R/V Jean A, 1990. (Photo Credit: Dann Blackwood, Woods Hole Field Center)

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U.S. Department of the Interior, U.S. Geological Survey
URL: http://pubs.usgs.gov/of/2000/of00-006/htm/shell.htm
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