Distribution data supplied by the Ocean Biodiversity Information System (OBIS). To interrogate UK data visit the NBN Atlas.Map Help
Researched by | Saskiya Richards | Refereed by | Admin |
Authority | M. Sars, 1835 | ||
Other common names | Nodding hydroid | Synonyms | - |
Corymorpha nutans is a solitary hydroid that grows up to 10 cm in height. The hydranth has a thick, cylindrical, elongated stem (hydrocaulus) that terminates in a disc-shape and is usually bent downwards. A thin, delicate, transparent, chitinous perisarc encases the lower two-thirds of the stem. The terminal end of the hydranth is marked by a conical hypostome that bears a mouth with a ring of 80 short, oral tentacles. A second ring of 32 white, long tentacles lies below the mouth. In between these two rings of tentacles are medusae-bearing reproductive gonophores, situated on 15-20 branched stalks. The basal end of the hydranth bears root-like threads that attach to the substrate. The hydranth is coloured white to pale red, darkening to bright red in the terminal mouth region.
Corymorpha nutans can be mistaken for a sea anemone. Individual hydranths live for about 1 year.
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NBN (National Biodiversity Network) Atlas. Available from: https://www.nbnatlas.org.
OBIS (Ocean Biodiversity Information System), 2023. Global map of species distribution using gridded data. Available from: Ocean Biogeographic Information System. www.iobis.org. Accessed: 2023-03-30
South East Wales Biodiversity Records Centre, 2018. SEWBReC Marine and other Aquatic Invertebrates (South East Wales). Occurrence dataset:https://doi.org/10.15468/zxy1n6 accessed via GBIF.org on 2018-10-02.
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Last Updated: 03/07/2008