Gonionemus
Genus of small marine jellyfish of the hydrozoan order Limnomedusae (phylum Cnidaria). Gonionemus species are bell-shaped and measure about 15 mm (0.6 inch) or more in diameter. From the centre of the bell hangs the manubrium, a tubular structure that contains the mouth, and around the bell's rim are hollow tentacles armed with stinging structures called nematocysts. Each
posted by TiredKnife @ 6:30 AM
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