Amorphous, conical sponge typically covered in large amounts of sediment.
Look alikes:
Tectitethya crypta
Spongia pertusa
Spongia obscura
Spheciospongia vesparium
Geodia gibberosa
Scratchpads developed and conceived by (alphabetical):
Ed Baker,
Katherine Bouton
Alice Heaton
Dimitris Koureas,
Laurence Livermore,
Dave Roberts,
Simon Rycroft,
Ben Scott,
Vince Smith