هل الاسفنج نبات أم حيوان ؟
إسفنجيات
 - Flash animations of sponge body structures, water flow and feeding

, Information on the ecology and the biotechnological potential of sponges and their associated bacteria.
تاربون سبرينغز sponge industry



, John Hooper
, Bernard Picton, Christine Morrow & Rob van Soest
, the world list of extant sponges, includes a searchable database.