<p><b>Krill Abundance Has Dropped 80% in 30 Years.</b>
(A) This gravid female is nearly ready to release her eggs.
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(B) Krill feed on phytoplankton, indicated by the green color in this specimen's digestive organ.
(Images: Langdon Quetin and Robin Ross, researchers at the Marine Science Institute, University of California, Santa Barbara, and funded by the Office of Polar Programs, National Science Foundation)
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<i>As the Antarctic Ice Pack Recedes, a Fragile Ecosystem Hangs in the Balance.</i> Gross L PLoS Biology Vol. 3/4/2005, e127 <a rel="nofollow" class="external free" href="https://dx.doi.org/10.1371/journal.pbio.0030127">https://dx.doi.org/10.1371/journal.pbio.0030127</a>