Often found on reefs, this sponge is blackish grey on its upper surface.
It is often cake-shaped, but can also form rounded or laterally expanded masses.
It is common on reefs.
Specimens have also been dredged from muddy sand bottoms in deeper water.
In life, the upper surface is blackish grey and the area near the base is yellowish grey.
Surface projections can be low, broad and blunt, or tall and sharp.
An extinction-risk assessment has not been added yet.