Spongia oculata, showing the orifices and currents outwards.. 2. Anastomosing horny substance of Spongia communis.; 3. Siliceous spiculum of S. papillaris.
Marco Bertolino, Carlo Cerrano, Giorgio Bavestrello, Mirco Carella, Maurizio Pansini, Barbara Calcinai
Zookeys
Figure 14.Haliclona (Gellius) marismedi. A Specimen on the surface of the coralligenous block and insinuating into it B Oxeas C Large toxas D Small toxas E Large sigma F Small sigma.