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Phylum Mollusca > Class Gastropoda > sea slugs > Order Sacoglossa
Tendril slug
Lobiger viridis
Family Oxynoidae
updated Dec 15
Where seen? This well camouflaged slug is sometimes seen among green seaweeds on our Northern and Southern shores.

Features: To about 3cm. It has a green shell and four long 'fingers' sticking out of the sides of its body that look like tendrils of a seaweed. These tendrils can be 'rolled up', making the slug very difficult to see among round seagrape seaweeds, for example.

The tendrils can also be unrolled. This may be done to deter predators. The tendrils can also be dropped off (autotomized) whereupon the tendril continues to wriggle and thus distract the predator.

Changi, Jun 05
What does it eat? Reports find this slug often among Oval sea grape seaweeds (Caulerpa racemosa). The tendrils may also help the slug obtain food from photosynthesis. Like other sacoglossans, this slug retains in its body, the chloroplasts obtained from its seaweed food.

Tendril slugs on Singapore shores

Photos of Tendril slugs for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map

Links References
  • K. R. Jensen. Sacoglossa (Mollusca: Gastropoda: Heterobranchia) from northern coasts of Singapore. 10 July 2015. The Comprehensive Marine Biodiversity Survey: Johor Straits International Workshop (2012) The Raffles Bulletin of Zoology 2015 Supplement No. 31, Pp. 226-249.
  • K. R. Jensen & R. S. L. Ong. Spawning observed in a specimen of the shelled sacoglossan Lobiger viridis Pease, 1863 from Singapore (Mollusca: Gastropoda: Heterobranchia).10 July 2015. The Comprehensive Marine Biodiversity Survey: Johor Straits International Workshop (2012) The Raffles Bulletin of Zoology 2015 Supplement No. 31, Pp. 250-254..
  • Debelius, Helmut, 2001. Nudibranchs and Sea Snails: Indo-Pacific Field Guide IKAN-Unterwasserachiv, Frankfurt. 321 pp.
  • Wells, Fred E. and Clayton W. Bryce. 2000. Slugs of Western Australia: A guide to the species from the Indian to West Pacific Oceans. Western Australian Museum. 184 pp.
  • Coleman, Neville. 2001. 1001 Nudibranchs: Catalogue of Indo-Pacific Sea Slugs. Neville Coleman's Underwater Geographic Pty Ltd, Australia.144pp.
  • Coleman, Neville, 1989. Nudibranchs of the South Pacific Vol 1. 64 pp.
  • Humann, Paul and Ned Deloach. 2010. Reef Creature Identification: Tropical Pacific New World Publications. 497pp.
  • Kuiter, Rudie H and Helmut Debelius. 2009. World Atlas of Marine Fauna . IKAN-Unterwasserachiv. 723pp.
  • Gosliner, Terrence M., David W. Behrens and Gary C. Williams. 1996. Coral Reef Animals of the Indo-Pacific: Animal life from Africa to Hawaii exclusive of the vertebrates Sea Challengers. 314pp.
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