CLASSIFICATION OF CERIANTHUS​

KINGDOM :- ANIMALIA ( Multicellular eukaryotic organisms)

PHYLUM :- COELENTRATA OR CNIDARIA (Tissue grade, diploblastic and acoelomate. )

CLASS :- ANTHOZOA OR ACTINOZOA (Only polypoid generation. sedentary, solitary, colonial.)

SUB-CLASS :- HEXACORALLIA (Tentacles and mesenteries in multiple of five or six.)

ORDER :-  CERIANTHARIA (Without skeleton and pedal disc. Mesenteries single.)

FAMILY :- CERIANTHIDAE (Tube-dwelling anemones)

GENUS :- Cerianthus

GEOGRAPHICAL DISTRIBUTION

  • Found along the Atlantic and the Pacific Coast, Cape Cod to Florida, Bay of Fundy and Mediterranean.

HABIT AND HABITAT

  • Cerianthus is a marine Anthozoa, adapted for burrowing life in the sand, living in vertical and cylindrical cavity in sea bottom.

CERIANTHUS

GENERAL CHARACTERSTICS OF CERIANTHUS​

  • Best known genus of hexacorallian Anthozoa. The size varies in different species.
  • It is anemone-like actinozoan with smooth, muscular, elongated, cylindrical body buried into the sand upto oral disc. The oral disc is exposed.
  • Oral disc bears simple, slender tentacles arranged in two sets, an outer marginal tentacles and an inner smaller oral or labial tentacles. 
  • Aboral end is simply rounded and provided with terminal pore.
  • There is one cycle of complete coupled septa.
  • There is a single dorsal siphonoglyph.
  • There is no true skeleton.
CERIANTHUS

SPECIAL FEATURES

  • It is markedly negative to gravity soon resuming an upright position. Cerianthus has considerable power of regeneration in oral region. Cerianthus membranaceous, an inhabitant of the Mediterranean, is a favourite aquarium animal in European aquaria and has been known to live under such conditions for 10 to 40 years.

IDENTIFICATION

  • The animal contains short and long tentacles in oral disc a telminal pore and all above characters and hence it is Cerianthus.

CERIANTHUS
CERIANTHUS
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