CLASSIFICATION OF EUSPONGIA​

PHYLUM :- PORIFERA (Pore bearing, cellular grade, asymmetrical or radially symmetrical.)

CLASS :- DEMOSPONGIAE (Spongin fibres or siliceous spicules. Canal system leuconoid type.)

ORDER :- KERATOSA (Skeleton of spongin fibres only.) 

GENUS :- Euspongia

GEOGRAPHICAL DISTRIBUTION

  • Cosmopolitan. Common in eastern Mediterranean, West India, U.S.A., Asia and Australia.

HABIT AND HABITAT

  • Euspongia is found in shallow water on rocky bottom. It is a sedentary form attached to the rocks by horny spongin in secretion

EUSPONGIA

GENERAL CHARACTERSTICS OF EUSPONGIA​

  • Commonly called as bath sponge attached to rocky substratum.
  • It attains a large and massive size with globular or cup-shaped body with dark black colour. The slender spongin fibres form small network.
  • Complex type of sponge, in which there is a further increase in the folding of the body wall. 
  • Surface of the body contains large openings called as oscula, and small opening called as inhalant canals.
  • Bath sponge is of household use. It is prepared-by squeezing and bleaching or dyeing the sponge. The common bath sponge mainly consists of spongin fibres having the capacity of holding water.
  • Commonly used in offices, etc. for wetting postal tickets and counting currency notes or papers, etc.
EUSPONGIA

IDENTIFICATION

  • The animal has has oscula, pores, globase body with meshy spongia fibres and all above features, hence it is Euspongia.

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