Show walking sponges sponge sponges those simple collect collections lons of cells said to he be the second lowe t form of animal life lime hae always been known to fasten themselves permanently to some spot on the alie ocean bottom and never leare it until they die food fond being obtained from the continual currents of water drawn through their tube like passage pas A species of f ponee hitherto unknown to science discovered in the london aquarium Is reported to be capable of slova ly creep inz froin a foodless urea area to one in aich food Is obtainable it Is supposed that one or more of these sponges entered the tanks unnoticed with sea water and has multiplied |