The feathery sea pen (''Virgularia schultzei'') is a
species
In biology, a species is the basic unit of classification and a taxonomic rank of an organism, as well as a unit of biodiversity. A species is often defined as the largest group of organisms in which any two individuals of the appropriate s ...
of
sea pen
Sea pens are colonial marine cnidarians belonging to the order Pennatulacea. There are 14 families within the order; 35 extant genera, and it is estimated that of 450 described species, around 200 are valid. Sea pens have a co ...
in the
family
Family (from la, familia) is a group of people related either by consanguinity (by recognized birth) or affinity (by marriage or other relationship). The purpose of the family is to maintain the well-being of its members and of society. Idea ...
Virgulariidae.
[Williams G.C., (1990) The Pennatulacea of southern Africa (Coelenterata, Anthozoa). Annals Of The South African Museum. 99(4): 31-119, Cape Town. ][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'' ]
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 entire colony can retract into the sand if disturbed. This species may grow to 50 cm in height and is about 1 cm wide.
[Jones, G. (2008) ''A field guide to the marine animals of the Cape Peninsula.'' SURG, Cape Town. ]
Distribution and habitat
The Feathery Sea Pen is known from
Luderitz in Namibia and round the southern African coast to central Mozambique in 6-222m under water.
It lives in sand and feeds on micro-plankton.
References
Virgulariidae
Animals described in 1910
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