![]() ![]() ![]() An article from even says that “a sponge destroyed in a blender can reform itself as the cells swim back together and take on the form and job needed for recovery”. This is a unique and helpful trait to have. Sponges are some of the oldest organisms on earth having been around up to 500 million years! Each individual cell in a sponge can transform to do any function within the sponge. Spicules can be a form of defense for the sponges to deter or hurt predators. Spicules form the skeleton of many sponges”. Spicules are “sharp spikes made of calcium carbonate located in the mesohyl. If you want to learn more about sponges and their structure, this is a really informative article about them! “Venus Flower Basket Glass Sponges” by NOAA Each class of sponge is composed of different organic materials. There are 4 different classes of sponges Calcarea (calcareous- has spicules*), Hexactinellida (horn sponges), Demospongiae (coralline), and Sclerospongiae (glass sponges). They get their food through filter feeding when the ocean currents go through their pores. ![]() They are sessile organisms, attached to reef surfaces via a holdfast. Sponges lack organs and a nervous system. They are one of the simplest forms of multi-cellular animals and come in a variety of different colors, shapes, and sizes. They are in the Phylum Porifera and there are about 5,000 different known species. ![]()
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