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About Animals: |
Almost three-fourths of the world's surface is covered in water. This water is home to over 20,000 different species of fish. The earliest fossils of fish date back over 400 million years. There are a wide variety of fish from the goby which is less than one half an inch long, to the whale shark which can be over 60 feet long. Most fish breathe through gills. Gills perform the gas exchange between the water and the fish's blood. They allow the fish to breathe oxygen in the water. |
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If you are interested in more information fish, check out our fish video collection. Web Sites about Fish:The E-quarium for Kids maintained by the Monterey Bay Aquarium See a QuickTime movie showing the birth of a seahorse at the Birch Aquarium of the Scripps Instituion of Oceanography. This will require the free QuickTime plug-in which you can download. |
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