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Phylum Mollusca > Class Gastropoda > sea slugs > Order Nudibranchia
Cerberilla nudibranch
Cerberilla sp.
Family Aeolidiidae
updated Oct 2016

Where seen? This tiny 'furry' nudibranch is sometimes seen among Sea Lettuce (Ulva sp.) as well as burrowing in sandy areas on our Northern shores.

Features: 1-2cm long. Broad, soft body with many long finger-like extensions (called cerata) arranged in rows. The colour in the cerata is actually in the digestive glands. The

rhinophores at the top of the head are very short compared to the long oral tentacles, the long tentacles that stick out on the sides like a moustache. The oral tentacles have a black stripe that runs across the front of the 'face' too. Young nudibranchs have longer oral tentacles relative to their body size. The foot is quite broad.

What does it eat? It is believed to feed on sea anemones.

Cerberilla nudibranchs produce a spiral egg mass with a long string or thread at the end that is attached to something hard in the sand and thus anchor the eggs in the sand.

The more commonly seen ones with cerata tipped in yellow, black and white is probably Cerberilla asamusiensis. But other kinds of Cerberilla nudibranchs have also been seen on our shores.

Pasir Ris, Dec 08

Long oral tentacles and short rhinophores.

Burrowing into the ground.
Pulau Sekudu, Jun 06

Cerata 'bristling' when disturbed.
Pulau Sekudu, Jun 06

Yellow colour is inside, and are
the digestive glands in the cerata.

Cerberilla nudibranchs on Singapore shores

Photos of Cerberilla nudibranchs for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map

Changi, May 12
Photo shared by James Koh on his blog.

Changi, May 14
Photo shared by Heng Pei Yan on facebook.

Chek Jawa, Jul 08
Photo shared by Toh Chay Hoon on her flickr.

Chek Jawa, Feb 02

Pulau Sekudu, Apr 09
Photo shared by Toh Chay Hoon on her blog.

Pulau Sekudu, Jun 14
Photo shared by Loh Kok Sheng on flickr.

Pulau Sekudu, Oct 11
Photo shared by Loh Kok Sheng on his blog.

Pulau Sekudu, Oct 11
Photo shared by Loh Kok Sheng on his blog.

Pasir Ris, Jul 12

Cyrene Reef, May 11
Photo shared by Loh Kok Sheng on flickr.

Cyrene Reef, Aug 12
Photo shared by Loh Kok Sheng on flickr.

  • 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.
  • 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.
  • 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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