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Geoduck: Difference between revisions
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A geoduck is a large species of [[bivalve]] [[clam]]. It has a rectangular shell that can be up to 9 or 10 inches long and 5 inches high. Each of the [[valves]] are equal in size and have irregularly shaped lines that indicate growth. The geoduck’s [[ligament hinge]] connects and holds the two valves together. The shell is covered by a thin covering called the [[periostracum]]. The periostracum protects the valve's middle layer from scratches and abrasions. | A geoduck is a large species of [[bivalve]] [[clam]]. It has a rectangular shell that can be up to 9 or 10 inches long and 5 inches high. Each of the [[valves]] are equal in size and have irregularly shaped lines that indicate growth. The geoduck’s [[ligament hinge]] connects and holds the two valves together. The shell is covered by a thin covering called the [[periostracum]]. The periostracum protects the valve's middle layer from scratches and abrasions. | ||
<ref name=mlife>[http://wikis.evergreen.edu/marinelife1011/index.php/Panopea_generosa#cite_note-2 Ever-green] ''marine-life-1011''. Web. March 7, 2011(Date-of-publication).</ref> | <ref name=mlife>[http://wikis.evergreen.edu/marinelife1011/index.php/Panopea_generosa#cite_note-2 Ever-green] ''marine-life-1011''. Web. March 7, 2011(Date-of-publication).</ref> The geoduck is best known for its large siphon. The siphon itself may grow to over 3 feet in length. Inside the siphon there are two tubes: the [[inhalant]] and the [[exhalent tubes]]. The geoduck takes in water with its inhalant tube and expels waste through it exhalent tube. Like all clams the geoduck has a [[foot]]. It uses its foot to burrow into the ground where it then lives for the rest of its life. <ref name=mlife>[http://wikis.evergreen.edu/marinelife1011/index.php/Panopea_generosa#cite_note-2 Ever-green] ''marine-life-1011''. Web. March 7, 2011(Date-of-publication).</ref> | ||
