Colobonema sericeum | |
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Scientific classification | |
Domain: | Eukaryota |
Kingdom: | Animalia |
Phylum: | Cnidaria |
Class: | Hydrozoa |
Order: | Trachymedusae |
Family: | Rhopalonematidae |
Genus: | Colobonema |
Species: | C. sericeum
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Binomial name | |
Colobonema sericeum
Vanhöffen, 1902
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Colobonema sericeum is a species of deep-sea hydrozoan in the family Rhopalonematidae that was first described in 1902. [1] This semi-transparent organism is found in the mesopelagic zone, has 32 tentacles, and has a bell diameter of up 45 mm. [2] [3] They are holoplanktonic and never attach to the seafloor as part of their polyp life cycle, but instead have embryos that develop directly into a small, swimming medusae. [3]