The Usual SuspectsRiver Otters on Frozen Chignik Lake. Note the Starry Flounder in the mouth of the otter at the left. The lakes sculpin, stickleback, char, salmon, flounder and an invertebrate – the isopod, Saduria entomon – figure into the diets of Chignik Lake otters. There is a lot of upwelling on the lake – spring water filtered through surrounding hillsides which emerges from the lake bottom. The spring water’s relatively stable temperature makes it relatively warm in winter, thus causing openings in the ice which the otters use to dive for food. February 2, 2017
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