Haliclona (Rhizoniera) viscosa - Volcano sponge - Schoorsteenspons

Haliclona (Rhizoniera) viscosa  (Topsent, 1888)

Volcano sponge - Schoorsteenspons

Porthkerris, United Kingdom, 13-9-2013. Detail of next photo.

Porthkerris, United Kingdom, 13-9-2013.