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Feathery sea pen : ウィキペディア英語版 | Feathery sea pen
The feathery sea pen, ''Virgularia schultzei'', is a species of sea pen in the family Virgulariidae.〔The Pennatulacea of Southern Africa (Coelenterata, Anthozoa), Annals of the South African Museum Volume 99 May 1990 part 4, Cape Town. ISBN 0 86813 109 1〕〔Branch, G.M., Branch, M.L, Griffiths, C.L. and Beckley, L.E. 2010. ''Two Oceans: a guide to the marine life of southern Africa'' ISBN 978-1-77007-772-0〕 ==Description== Feathery sea pens stand upright in the sand like the quill of a feather. The central axis has flat branch-like extensions on which the polyps are clustered. They are usually white or cream. The peduncle is very long and the entiure colony can retract into the sand if disturbed. They may grow to 50 cm in height and are about 1 cm wide.〔Jones, Georgina. ''A field guide to the marine animals of the Cape Peninsula.'' SURG, Cape Town, 2008. ISBN 978-0-620-41639-9〕
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