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See also ... Sponge defences and how many creatures (including humans!) take advantage of these. Ascidians are often mistaken for sponges and visa versa. Links Introduction to Porifera on the Museum of Paleontology, University of Californica, Berkeley website: great introduction to the phylum. Lots of photos of sponges and microscopic sponge parts. Plenty of links. Phylum Porifera on Animal Phylogeny: Investigating Evolution of Body Plan by W. D. Dolphin and Maria Oehler on the Iowa State University website: Lots of excellent photos and diagrams on the internal structures of sponges. The Incredible Sponge on the Smithsonian Magazine website: "It may seem primitive, but it can do some things you wouldn't want to try at home"...indeed...an interesting introduction to sponges. Porifera on the Canada's Aquatic Environments webpage on the University of Guelph website: an easy introduction to the more technical aspects of their morphology, metabolism, reproduction, ecology with an interesting section on their idiosyncracies and photos. Sponge’s way of cloning requires only seawater by Susan Scott on Ocean Watch on the StarBulletin website: a brief but enlightening and simplified introduction to the most fascinating aspects of sponges. Phylum Porifera from The Shape of Life on the PBS website: quick and interesting introduction to sponges and how they might be our oldest ancestor, with lots of photos and links. Porifera on Biomedia of the Glasgow University Zoological Museum on the Biological Sciences, University of Paisley, Scotland website: a brief introduction to sponges, explanations of the major classes, a glossary of terms and diagrams and photos. Real Sponges are Special by Clifford Young on the Beachcomber on the Western Fisheries Magazine: a layman's introduction to sponges and their uses. Sponges on Life on Australian Seashores by Keith Davey on the Marine Education Society of Australia website: An introduction to sponges, with an animated diagram of how the cells inside a sponge work to get food. Sponges get Respect by Doug Stewart on the National Wildlife Foundation website: fascinating details on sponges, and descriptions of the weirder species, including one which appears to be one single giant cell! Sponges: The Weird Wonders of the Sea! by Jonathan Bird on the Oceanic Research Group website: an easy introduction designed for classroom use with lots of photos. How long does a sponge live? on the Mad Scientist website: Alexander M. Kerr gives the surprising answer! Why are sponges stiff when they are dry, but soft and floppy when wet? on the Mad Scientist website: Keith McGuinness reveals the answer as well as a more detailed explanation of the internal structure of a sponge. If sponges have no eyes, ears, and nerves, then how can it react to stimuli? on the Mad Scientist website: Trevor Cotton explains the mystery. The biology and ecology of sponges on the Big Bank Shoals of the Timor Sea on the Australian Institute of Marine Science website: introduction to sponge structure, reproduction and ecology with lots of photos. Other references
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a
companion website to the chek
jawa guidebook
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Inside
the sponge, tiny branching canals lead to chambers. Lining these
chambers are cells, each with a single beating hair. The beating
of these hairs generates a current through the sponge. Water
is sucked in through tiny holes on the surface of the sponge.
