MAREK MIS / SCIENCE PHOTO LIBRARY MAREK MIS / SCIENCE PHOTO LIBRARY
Polarised light micrograph of a Nauplius, the larval stage of a copepod crustacean. The antennae protruding from its head are used for swimming. The nauplius has a simple, unpaired eye (dark red, centre) that it uses to move in and out of sunlight. The eye will be lost as the larva develops. Magnification: x330 when printed 10 centimetres tall.
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