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Phylum Mollusca > Class Gastropoda > sea slugs > Order Anaspidea
Furry sea hare
Stylocheilus sp.
Family Aplysiidae
updated May 2020
Where seen? This is another 'hairy' sea hare sometimes seen on some Southern shores. Usually large numbers are seen during a visit and then none for a very long time.

5-8cm, sometimes much smaller. Body long with a long 'tail'. It is covered in tiny spiky projections that give it a furry look. The oral tentacles and rhinophores are about the same size. The oral tentacles usually lack large 'hairy' projections and has no flaps. The parapodia appears to be a hole in the centre of the body, rather than 'wings' or flaps as in other large sea hares. It comes in various shades of brow, usually with bright blue or purple spots which are ringed in black or brown. With many fine lines in parallel stripes. Usually well camouflaged and blends in perfectly with among seaweeds and seagrasses.

Sometimes mistaken for the Hairy sea hare which have flat thicker 'hair' and lack fine parallel lines. More on how to tell apart hairy slugs and snails.

What does it eat? It feeds on cyanobacteria formerly known as the filamentous blue-green algae. These sea hares are preyed upon by the Gymnodoris nudibranch.

St John's Island, Mar 05

Long narrow tail with spots.

Two pairs of tentacles.

Spiky projections.

Purple or blue spots with fine lines
running along the length of the body.

Well camouflaged among seaweeds.
St John's Island, Nov 15

Tiny one among seagrasses.
Changi, Jun 15

Small one among seagrasses.
Changi, Apr 09

Furry sea hares on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Terumbu Bemban, Jun 10
Photo shared by Toh Chay Hoon on her blog.

Terumbu Semakau, Jun 10
Photo shared by Loh Kok Sheng on his blog.

Terumbu Semakau, Jun 10
Photo shared by James Koh on his blog.

Seringat Kias, Apr 12
Photo shared by Loh Kok Sheng on his blog.

Seringat Kias, Apr 12
Photo shared by Loh Kok Sheng on his blog.

Links References
  • Tan Siong Kiat and Henrietta P. M. Woo, 2010 Preliminary Checklist of The Molluscs of Singapore (pdf), Raffles Museum of Biodiversity Research, National University of Singapore.
  • 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.
  • 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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