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May 29, 2008
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Since the 1980s, jellyfish populations soared and then moderated, and their ranges expanded.
Jellyfish populations peaked in 2000. They have since moderated at levels that still exceed those of the 1980s. In addition, jellyfish ranges have expanded.
Credit: Zina Deretsky, National Science Foundation, after Brodeur et al in "Progress in Oceanography"
Images credited to the National Science Foundation, a federal agency, are in the public domain. The images were created by employees of the United States Government as part of their official duties or prepared by contractors as "works for hire" for NSF. You may freely use NSF-credited images and, at your discretion, credit NSF with a "Courtesy: National Science Foundation" notation.
Additional information about general usage can be found in Conditions.
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