Each type of cell has its own particular function, but the cells do not form tissues as in the higher animals. Although sponges are composed mostly of soft material, they do have strengthening structures. Figure A Let us look more closely at the mystery of coordination of the sponge cells. A the sketch of the construction of a single three-spiked spicule by a group of about five tiny, disconnected cells. Also note the construction of more complicated spicules by larger cells having many nuclei.
Science has no answer.
That God alone knows and can know is, in the light of the available evidence, still a viable position to hold. Our next mystery begins with the death of a sponge such s the one we have just described. The dead cells and other soft materials decompose, leaving the framework to break up and settle down into the ooze on the bottom of the Sea. Other species of tiny, single celled organisms called arenaceous foraminifera, which look under the microscope like formless amoebae. In Figure B we see sketches of these houses magnified about 35 times.