Ceriantharia


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Ceriantharia

[¦ser·ē·ən′thar·ē·ə]
(invertebrate zoology)
An order of the Zoantharia distinguished by the elongate form of the anemone-like body.

Ceriantharia

 

an order of marine invertebrates of the class Anthozoa. The Ceriantharia are solitary polyps that burrow into silt, from which only the brightly colored upper end, with a mouth and numerous highly extensible tentacles, is visible. The body, which has no skeleton, is cylindrical and enclosed in a protective casing of solidified mucus. It ranges in length from 2 to 70 cm. The partitions of the gastral cavity develop in the only zone of growth near one of the narrow sides of the gullet, which is laterally flattened; they are arranged in pairs—a sign of bilateral structure.

The Ceriantharia feed on various small animals, which they capture with their tentacles. Approximately 50 species are known; they are found mainly in tropical seas.

REFERENCES

Beklemishev, V. N. Osnovy sravnitel’noi anatomii bespozvonochnykh, 3rd ed., vol. 1. Moscow, 1964.
Zhizn’ zhivotnykh, vol. 1. Moscow, 1968.

A. V. IVANOV

References in periodicals archive ?
Anthozoa: Actiniaria, Zoanthidea, Corallimorpharia and Ceriantharia.
Ecology of Ceriantharia (Coelenterata: Anthozoa) of the northwest Atlantic from Cape Hatteras to Nova Scotia.