Sycon raphanusis commonly referred to as pineapple sponge. Difficulty in the aquarium: There are no reports available yet that this animal has already been kept in captivity successfully. Toxicity: Toxic hazard unknown.
This calcareous sponge is oval or globular with a a hairy or hispid surface. The colour is white, grey or yellow.This sponge grows up to 8 cm in lenght.Sycon raphanus lives in caves,among weeds, under stones and vertical cliffs at dephts to 70 m.