CLASSIFICATION OF HALIOTIS
PHYLUM :- MOLLUSCA (Unsegmented bilaterally symmetrical and provided with visceral mass, foot and mantle. )
CLASS :- GASTROPODA (Visceral hump twisted.)
SUB-CLASS :- PROSOBRANCHIATA (Gills in front of heart.)
ORDER :- ASPIDOHRANCHIATA (Gills bipectinate.)
SUB-ORDER :- RHIPIDOGLOSSA (Ctenidia and auricles paired.)
GENUS :- Haliotis
- Commonly found in China, Japan, U.S.A. Pacific coasts and Europe.
HABIT AND HABITAT
Haliotis is a marine prosobranchiate inhabiting below low-tide level attached to rocks and boulders and feeding upon seaweeds and other dead organic matter
GENERAL CHARACTERSTICS OF HALIOTIS
- Commonly called as abalone.
- Shell is flattened ear-shaped and perforated with a series of holes tentacular processes emerge. Shell also contains several foramina through which respiratory water current passes.
- Large foot is provided with epipodia containing numerous sensory tentacles.
- Operculum is absent. Eyes are stalked.
- Spacious mantle contains a pair of gills.
- Anteriorly siphon contains a pair of tentacles on each side.
The colourful pearly iridescent beautiful shells when polished are much sought after in Europe and U.S.A. for the extensive manufacture of buttons, jewellery, souvenirs and buckles. The flesh is considered a delicacy in China, Japan and Europe.
The animal contains sensory tentacles and all above features, hence it is Haliotis.