Jellyfish are a highly diverse group of aquatic animals. Their diameters range from 1 mm to over 1 m. Most have long tentacles, in some cases reaching more than 10 m in length. They come in a wide ...
Porifera (Schwämme, Spongien) / Walther Arndt -- Hydrozoa / Hjalmar Broch -- Scyphozoa / Thilo Krumbach -- Anthozoa / Ferdinand Paz -- Ctenophora (Kammquallen ...
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