ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY ALEXIS ROSENFELD / SCIENCE PHOTO LIBRARY
Marine biological research. Diver monitoring a net used to collect plankton samples for biological research. Plankton is the drifting assortment of tiny animals and plants that forms the basis of the marine food chain. Studying the composition of the plankton can provide information on the health of a marine ecosystem. Photographed in the Mediterranean Sea.
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