|CNIDARIA : CONICA : Sertulariidae||SEA ANEMONES AND HYDROIDS|
Description: The main stem of this hydroid is rather slender and the feather-like side branches are arranged in a spiral. The hydrothecae are on the upper side of the pinnae. They are grouped together in tight clusters of 2-5 hydrothecae, and there is 1 cluster to each internode. Within each cluster the hydrothecae curve alternately outwards from the axis of the pinnae. The gonothecae are oval shaped and smooth, with a short neck. The rim of the aperture is smooth.
Habitat: A typical species of tide swept, sand-scoured sites, attached to stones, boulders, wrecks and bedrock.
Distribution: A common species all round the British Isles
Similar Species: This is a very distinctive species.
Key Identification Features:
Distribution Map from NBN: Grid map (fast) : Interactive map (slower, requires login to view records) : National Biodiversity Network mapping facility, data for UK.
|Picton, B.E. & Morrow, C.C. (2015). Hydrallmania falcata (Linnaeus, 1758). [In] Encyclopedia of Marine Life of Britain and Ireland. |
http://www.habitas.org.uk/marinelife/species.asp?item=D6530 Accessed on 2016-2-11
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