Calcareous phytoplankton, SEM

Calcareous phytoplankton, SEM

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Credit: NATURAL HISTORY MUSEUM, LONDON/SCIENCE PHOTO LIBRARY

Caption: Calcareous phytoplankton. Scanning electron micrograph (SEM) of a Calcidiscus leptoporus coccolithophore, a small algal organism, part way through the sexual reproductive phase. The diploid cell (large circles) is emerging from a cover of fused daughter cells (small circles). Coccolithophores are surrounded by a skeleton (coccosphere) of calcium carbonate plates (coccoliths). When the organism dies, the plates separate and sink to the ocean floor. Individual plates have been found in vast numbers and can make up the major component of a particular rock, such as the chalk of England. Specimen from the Alborean Sea, western Mediterranean.

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Keywords: alborean sea, alga, algae, algal, aquatic, black background, calcareous phytoplankton, calcidiscus leptoporus, calcium carbonate, coccolith, coccolithophorid, coccolithphore, coccoliths, coccosphere, cut out, cut outs, cut-out, cut-outs, cutout, cutouts, marine, mediterranean, microbiological, microbiology, nature, plankton, planktonic, scanning electron micrograph, scanning electron microscope, sem, skeleton

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