Eudistoma kaverium   Meenakshi,  2002 (Sea Squirt)
Organism information awaits expert curation
Class: Ascidiacea

Size: Zooids measure 9-10mm

Colour: Living colonies are translucent whitish with light flesh coloured zooids. Zooids are pinkish brown in preservative.

The colony consists of upright, cylindrical lobes arising from a common basal test. The basal test mass and about half of the base of the cylindrical lobes are intensely coated with sand and have sand internally. The number of lobes from each colony range from 16-51. Faecal pellets are completely absent from the test.
The zooids open by separate branchial and atrial apertures on the upper surface placed near to each other in an oval transparent area of test. Each zooid is contained in a compartment occupying the middle or basal part of the compartment and are arranged at right angles to the surface test.
Zooids are robust; siphons are short; 13 longitudinal muscles and 26 circular muscles are present in the anterior and middle part of the thorax. The oesophageal neck is long and thin. Stomach at the posterior end; gonads are in the gut loop and the testis follicles in grape like clusters spill over the sides. Vas deferens prominent. Maximum 6to 7 embryos are present in the atrial cavity of which one or two of them are tailed larvae.

Synonym (s)

Common Name (s)
Economic Importance and Threats

Habitat:  Reef Associated, Coastal


• Tamil Nadu, Mandapam (Lat: 9.26) (Long: 79.13) INDIA
• South East Coast INDIA

Literature Source(s)
  • Meenakshi, VK. (2002) Occurrence of a new species of colonial ascidian- Eudistoma kaverium sp.nov. and four new records of Eudistoma to Indian coastal waters Indian Journal of Marine Sciences Scientific Publishers 31(3) 201-206 Available at -
  • Society for the Management of European Biodiversity Data (2009) World Register of Marine Species (WoRMS) Available at -

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