This wonderful illustration of see anemones was scanned at high resolution from the German encyclopedia Meyers-Konversations Lexikon (volume 5) printed in the late 19th century. The illustration legend:

Meyers-Konv.-Lexikon 5. Aufl. Bibliographisches Institut in Leipzig. Zum Artikel »Seeanemonen«.

Click the pic for a full size Seeanemonen at 10319 × 7312 pixels, 1200 dpi.