A sea fan, or gorgonian, is a form of
sessile colonial cnidarian, similar to a
sea pen or a soft coral, found throughout the oceans of the world, especially in
tropical and
subtropical seawater. Individual tiny
polyps form a colonies that are normally erect, flattened, branching, and reminiscent of a
fan. Others may be whiplike, bushy, or even encrusting. A colony can be several feet high and across but only a few inches thick. They may be brightly coloured, often purple, red, or yellow.
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n. กัลปังหาตระกูล Gorgonia (syn. gorgonian)
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