Dear all, Can anyone help with identification of a sponge (Porifera) used as blackboard wiper in the Faroe islands in old days? Please find two pictures at http://arbetsplats.slu.se:4032/Shared%20Documents/Porifera.jpg and http://arbetsplats.slu.se:4032/Shared%20Documents/PoriferaDetail.jpg Thanks in advance Börge Pettersson