Description: Blue-gray, thickly encrusting sponge that has distinctive conules on the entire surface of the sponge. Oscules are about 1-2mm wide and scattered about the surface. They are usually ringed by a thin membrane that forms a collar. Fleshy texture. Compressible when touched.
Found mostly on flat or slightly sloping rock surfaces. Sometimes attached to kelp stalks and growing in close association with crustose coralline algae.
Distribution and depth range: This photo was taken at 8 m; known to be found up to 30 m deep.
Tide zone | Subtidal |
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Habitat | Seaweed Beds, Walls |
Substrate | Hard Rock |
Location | West Coast Southern NI |