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Eudistoma caeruleum (Blue lollipop ascidian) 

Life > Eukaryotes > Opisthokonta > Metazoa (animals) > Bilateria > Deuterostomia > Chordata > Tunicata > Ascidiacea (sea squirts) > Aplousobranchia > Family: Polycitoridae  > Genus: Eudistoma

 Eudistoma caeruleum (Blue lollipop ascidian). Bottom left shows a close-up of a colony showing the paired inhalent and exhalent siphons [photo CL Griffiths ]

Distribution and habitat

Distribution includes the KwaZulu-Natal and Mozambique coasts, the west coast of Madagascar and Mayotte in the Comoros islands. Occurs in intertidal rock pools, including those with sand in them (Branch et al. 2010).


  • Sanamyan, K. (2012). Eudistoma caeruleum (Sluiter, 1909). In: Shenkar, N.; Gittenberger, A.; Lambert, G.; Rius, M.; Moreira Da Rocha, R.; Swalla, B.J.; Turron, X. (2012) Ascidiacea World Database. Accessed through: World Register of Marine Species (WoRMS) on 2012-02-12.


  • Branch GM, Griffiths CL, Branch ML, Beckley LE. 2017. Two oceans - a guide to the marine life of southern Africa (4th Edition). Penguin Random House South Africa, Cape Town. More details...
  • Monniot C, Monniot F and Griffiths CL. 2001. South African ascidians. Annals of the South African Museum 108(1): 1-141.

Text by Hamish Robertson