|TUNICATA : PHLEBOBRANCHIA : Ascidiidae||SEA SQUIRTS|
Description: This solitary ascidian is rectangular in shape and attached by a small area of the base. The test is clean and pale pink or milky white in colour. The oral siphon is terminal and the atrial siphon is 1/4 of the way down the side of the body. The test is firm and thick, and collapses little on collection. 60mm tall x 30mm wide.
Habitat: Commonest on rocky substrata in sheltered or semi-exposed silty conditions.
Distribution: Widespread around the British Isles, commoner in the north.
Similar Species: Other ascidians with clean tests include Corella parallelogramma and Ciona intestinalis but this species is distinctive in shape and has a more opaque test.
Key Identification Features:
Distribution Map from BioMar data for Ireland - Google Earth map: download this placemark (not got Google Earth installed?)
Distribution Map from NBN: Grid map (fast) : Interactive map (slow, requires login to view records) : National Biodiversity Network mapping facility, data for UK.
|Picton, B.E. & Morrow, C.C., 2010. [In] Encyclopedia of Marine Life of Britain and Ireland |
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