CLASSIFICATION OF CHALINA​

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 :- Chalina

GEOGRAPHICAL DISTRIBUTION

  • Found in Europe. Common from Rhode Islands to Labrador. North Carolina to Cape Cod. Very common in long Island Sound.

HABIT AND HABITAT

  • Chalina is found in deep waters. In shallow waters it is only found when detached from its stalk and washed ashore.

CHALINA

GENERAL CHARACTERSTICS OF CHALINA​

  • Chalina is commonly called as Dead man’s fingers or Mermaid’s gloves. 
  • Orange or yellowish-brown or red-coloured sponge attached to rocks by stalk.
  • Surface of the body is flattened consisting of bunches of finger-like branches and perforated by several ostia and several oscula.
  • Skeleton comprise spongin and siliceous spicules. It may be joined or enclosed. 
  • Canal system is of leucon type. 
  • It reproduces sexually and asexually by regeneration and budding. 
  • Sexual reproduction by sperm and ova.
CHALINA

IDENTIFICATION

  • The animal has finger shaped, forked or digitate stalk shaped body, ostia and all above characters and hence, it is Chalina.

CHALINA
CHALINA
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