| A Gallery of Protists |
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| Single-celled organisms are critical links in the ocean's food web. Though ubiquitous and abundant, their microscopic sizes make them hard to sample and therefore hard to study.
These protists, all found in Antarctic waters, are between 20 and 100 micrometers. |
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A heliozoan is heterotrophic, meaning it consumes plant and animal matter including even small animals. (Dawn Moran, WHOI.)
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Posted: May 16, 2013
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