CLASSIFICATION OF TETHYA

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

CLASS :- DEMOSPONGIAE (Skeleton of spongin fibres or siliceous spicules which are not six-rayed.)

ORDER :- Monaxonida (Spongin mayor may not be present; spicules monaxon.) 

GENUS :- Tethya

GEOGRAPHICAL DISTRIBUTION

  • It is found in the Mediterranean Sea and North Eastern Atlantic Ocean, and from southern Namibia round the southern African coast to KwaZulu-Natal, usually on shallow reefs.

HABIT AND HABITAT

  • Tethya is found in the sea.

TETHYA DIAGRAM, STRUCTURE OF TETHYA

GENERAL CHARACTERSTICS OF TETHYA

  • Also known as the golf ball sponge or orange puffball sponge.
  •  It is spherical in shape, with a warty surface, and grows to about 10 cm in diameter. Oscula are present on the upper surface.
  • Spherical sponge attached to substratum. 
  • Body surface tuberculate with radiating bundles of monaxon spicules and several exasters. 
  • Styles have indistinct tylote ends. 
  • Spongin fibres are entirely absent.
  • Some members of genus tethya are known to be able to move at speeds of between 1 and 4 mm per day
TETHYA

IDENTIFICATION

  • The animal has branched colony, ostia, rhagon type canal system and all above features and hence it is Spongilla.

TETHYA
TETHYA
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