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Description:
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Original description As Actinia crispa, from specimens collected in the Red Sea
Diagnostic field characters Tentacles long (typically to 100 mm), sinuous, evenly tapered to point, often tipped mauve or blue, rarely yellow or green. Oral disc widely flared, may exceed 500 mm diameter, but commonly 200 mm. Column gray in colour, leathery in texture, with prominent adhesive verrucae; lower part rarely mottled with yellow. Column buried in sediment so oral disc lies at surface of sediment, or pedal disc attached to branching coral.
Details Tentacles very numerous -- to 800 counted. Oral disc usually brownish violet or gray, rarely bright green. Tentacles shrivel when animal is disturbed, and assume green or gray luster; may shorten greatly in absence of fish. For an animal attached to coral branches, verrucae adhere to branches, holding oral disc open among them; verrucae adhere to sediment particles if animal lives in sediment.
Similar species Heteractis magnifica rarely lives on branching coral. Its blunt tentacles and brightly coloured column are distinctive. Macrodactyla doreensis, Heteractis aurora, and H. crispa also live burrowed into sediment. In contrast to anemones of those three species, H. crispa has many, long tentacles. Those of the other two burrowing species of Heteractis may also be magenta-tipped. Tentacles of H. crispa may contract in the absence of a fish, but they are more numerous than in H. malu, and lack the swellings of H. aurora. The column of H. crispa is unique among host actinians.
Distribution French Polynesia, Micronesia, and Melanesia to the Red Sea, and Australia to Japan
Fish A. akindynos, A. bicinctus, A. chrysopterus, A. clarkii, A. ephippium, A. latezonatus, A. leucokranos, A. melanopus, A. omanensis, A. percula, A. perideraion, A. polymnus, A. sandaracinos, A. tricinctus
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Keywords:
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Leathery Sea Anemone
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