Overview

Comprehensive Description

Description

 A small sea-fan which forms slender colonies with little branching, up to 20 cm tall but usually 7-10 cm. Branches are irregularly orientated. Colour white or greyish, sometimes with a pinkish tinge.It has been suggested (Manuel 1981) that Swiftia pallida is conspecific with Gorgonia pinnata Johnston 1847.
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Source: Marine Life Information Network

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Description

A small sea-fan which forms slender colonies with little branching, up to 200mm tall but usually 70-100mm. Colour white or greyish, sometimes with a pinkish tinge. The only other known British sea-fan is Eunicella verrucosa which is complexly branched, and usually salmon pink in colour. However white Eunicella do occur in most populations and in Galway Bay all individuals are rather sparsely branched and white in colour.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Distribution

Recently re-discovered in several localities on the west coast of Scotland and in the Kenmare River, SW Ireland.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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Ecology

Habitat

Known from seamounts and knolls
  • Stocks, K. 2009. Seamounts Online: an online information system for seamount biology. Version 2009-1. World Wide Web electronic publication.
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Source: World Register of Marine Species

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Depth range based on 24 specimens in 1 taxon.
Water temperature and chemistry ranges based on 15 samples.

Environmental ranges
  Depth range (m): 16.75 - 2170
  Temperature range (°C): 3.873 - 14.920
  Nitrate (umol/L): 0.745 - 19.646
  Salinity (PPS): 34.962 - 38.873
  Oxygen (ml/l): 4.388 - 6.144
  Phosphate (umol/l): 0.098 - 1.304
  Silicate (umol/l): 1.452 - 21.589

Graphical representation

Depth range (m): 16.75 - 2170

Temperature range (°C): 3.873 - 14.920

Nitrate (umol/L): 0.745 - 19.646

Salinity (PPS): 34.962 - 38.873

Oxygen (ml/l): 4.388 - 6.144

Phosphate (umol/l): 0.098 - 1.304

Silicate (umol/l): 1.452 - 21.589
 
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 Found on rocks and boulders from depths of 15-60m, most frequently below 20m. Also recorded on coarse pebbles lying in coarse shell sand with silt. May occur at depths of 2380m (see additional information).
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Attached to bedrock and boulders in depths of 18-60m.
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Source: Encyclopedia of Marine Life of Britain and Ireland

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