https://creativecommons.org/publicdomain/zero/1.0/ https://www.rawpixel.com/image/2273551 Stephoidea–Ringelstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress.…

Stephoidea–Ringelstrahlinge from Kunstformen der Natur (1904) by Ernst Haeckel. Original from Library of Congress. Digitally enhanced by rawpixel.

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