" Sponges: An Historical Survey of Their Knowledge in Greek Antiquity." Journal of the Marine Biological Association of the United Kingdom 87.6 (2007): 1757–63. " The Largest Sponge in the World?" Marine Biodiversity 47.2 (2017): 367–68. Instead, most rely on maintaining a constant water flow through their bodies to obtain food and oxygen and to remove wastes. University of California Museum of Paleontology. "Marine Life of the North Atlantic." New York: Aqua Quest Publications, Inc., 2003. Our muscles pull on our bones to make us. Jellyfish mostly drift, but they can move on purpose if they need to. Sponge Fishing in Key West and Tarpon Springs, American Sponge Diver, 2003 As water filters through a sponge’s porous exterior, the sponge gains some motion, receives food and oxygen, and dispels waste. Despite not having bones, these animals do move. " Agalychnis" The IUCN Red List of Threatened Species: e.T55843A11379402, 2004. "Phylum Porifera: the sponges." Invertebrates.
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