Branching sponge up to 60 cm high with hollow, irregular, softly ribbed tubes with a spherical to oval opening at the apex.
Some tubes are finger-like, cylindrical, and narrow along their length, 2–4 cm wide, while others are flattened and flared to about 10 cm wide. Tubes may be fused.
Colour in life mauve throughout, tops of the tubes are tan.
Habitat | Covered Rock, Rubble Bank |
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Tide zone | Subtidal |
Occurence | Very Common |
Location | East Coast Northern NI, West Coast Southern SI |