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Branching Red Algae
Under the microscope, you can peer inside the cells of this filamentous red algae....
A Diatom Helix
This beautiful marine diatom Chaetoceros debilis was caught in the North Sea. Not...
A Swimming Snail
Sea butterflies (also called pteropods) are sea snails aptly named: they are...
These "elevator" rudists, an ancient bivalve, used one long heavy valve to anchor...