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. 2011 Aug 10;6(8):e23166. doi: 10.1371/journal.pone.0023166

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Villegas-Amtmann et al.

This is an open-access article distributed under the terms of the Creative Commons Attribution License, which permits unrestricted use, distribution, and reproduction in any medium, provided the original author and source are properly credited.

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Dive duration frequency distribution plots for California (CSL, Z. californianus) and Galapagos (GSL, Z. wollebaeki) sea lion females during a warm (CSL, Jul–Aug. 2005; GSL, Mar. 2005) and a cold (CSL, Feb–Mar. 2007; GSL, Aug–Sep. 2006) season.