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women's t-shirts light micrograph women's t-shirts diatom women's t-shirts alga women's t-shirts triangular women's t-shirts algae women's t-shirts microscopic women's t-shirts unicellular women's t-shirts marine women's t-shirts freshwater women's t-shirts plankton women's t-shirts food chain women's t-shirts silica women's t-shirts siliceous women's t-shirts diatomaceous earth women's t-shirts diatomite women's t-shirts

photographs light micrograph photos diatom photos alga photos triangular photos algae photos microscopic photos unicellular photos marine photos freshwater photos plankton photos food chain photos silica photos siliceous photos diatomaceous earth photos diatomite photos

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Diatom alga. Light micrograph of the triangular- shaped diatom Triceratium ladus. Diatoms, members of a division of the algae family, are microscopic, unicellular organisms that occur abundantly in marine and freshwater plankton. They form an important part of the food chain. The body is composed of two halves which fit together like a tiny pill box. The cell walls contain silica, which is preserved in deposits known as siliceous or diatomaceous earths (ooze). Once hardened into rock it is called diatomite. The high porosity of this rock enables it to be used for filters, fillers & as a mild abrasive. Magnification x120 at 35mm size.