BM Gallery-Asplanchna Whirling Animals Asplanchna seen here using differential interference contrast lighting is a planktonic rotifer, virtually invisible in lake water due to its transparency. Only its eggs and the food items in its intestine give a predator a clue that a large edible rotifer is drifting nearby. Asplanchna makes its living by gulping in other rotifers and single cells. This material may be copied for use in student classroom projects and reports.
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