Greek bathing sponge
Average size: 10-20 cm (diameter)
Maximum size: 35-40 cm (diameter)
It belongs to the large group of sponges. The shape is variable, usually massive and with conical lobes endowed with a osculum (the opening for releasing the filtered water) to the end. Its colour can vary from white to yellowish to black. The inside usually is red. The Greek bathing sponge is relatively common in the whole Mediterranean basin, from the surface till 40-80 meters of depth. It is used as bathing sponge.
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Notes
Roberto Sandulli, “Dentro al mare della Costa d'Amalfi" guida alla fauna marina della Costiera Amalfitana, Ecostiera edizioni, anno 1999