Duncanopsammia is a monotypic genus of stony corals. It is represented by the single species, Duncanopsammia axifuga, commonly called whisker coral, duncanops coral, or simply duncan coral. Individual polyps are fairly large with round skeletal bases (corallites) 10–14 millimeters (0.39–0.55 in) in diameter and larger central discs from which multiple tentacles radiate; the polyps form a structure branching at irregular intervals to form a large colony.
Dunkan (Duncanopsammia)
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Dunkan has large polyps that possess a wide, flat, circular disk that is usually light brown or green in color, and is usually patterned by faint stripes or darker or lighter color. The tentacles of an average polyp are thin and are usually colored brown or green similar to the disk color. The tentacles have rows of stinging cells called nematocysts, and generally produce a sticky sensation when touched. An individual polyp resembles a miniature sea anemone although the diameter of each polyp can only reach a diameter of 2–3 centimeters (0.79–1.18 in).[4] The polyps can open and contract depending on stimuli including to move captured prey to the central mouth.