Grantia compressa (Fabricius, 1780)

Grantia compressa

Description: This sponge is usually white to cream in colour but occasionally pale brown individuals occur. It is flat, like a small hot water bottle and open at one end, it may also be tubular, or composed of contorted flat lobes, with a very short stalk. The surface of the sponge is smooth and clean.

Habitat: Usually found on the low shore beneath overhangs, but is also common in the shallow sublittoral attached to kelp stipes or other algae.

Distribution: A common species on all coasts of the British Isles.

Similar Species: This species may be confused with Scypha ciliata which is also whitish in colour and tubular, however in S. ciliata the surface is hairy and there is a crown of spicules around the open end of the tube.

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). Grantia compressa (Fabricius, 1780). [In] Encyclopedia of Marine Life of Britain and Ireland.
http://www.habitas.org.uk/marinelife/species.asp?item=C700 Accessed on 2015-11-28

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