CHRIS SATTLBERGER / SCIENCE PHOTO LIBRARY CHRIS SATTLBERGER / SCIENCE PHOTO LIBRARY
Plankton culture. Biologist taking a sample of plankton in a culture room at an aquarium. The term plankton refers to tiny, floating algae and protozoans. Aquaria produce plankton to feed the many species of marine animals that rely on it as a food source. Photographed at Genoa Aquarium, Italy.
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