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Phylum Mollusca > Class Gastropoda > sea slugs > Order Nudibranchia
Cow nudibranch
Goniobranchus tumulifera
Family Chromodoridae
updated Oct 2016
Where seen? This small colourful nudibranch with a cow-like pattern is sometimes seen on our Northern shores. On coral rubble and rocky shores with sponges and encrusting animals. It was previously known as Chromodoris tumulifera.

Features: 2-3cm. Body broad usually white with black spots. Edges of the body and feathery gills and rhinophores tips yellow or orange. According to Bill Rudman, they have tiny glands around the edge of the mantle that secretes defensive substances to deter predators.

Members of the Family Chromodorididae absorb the toxic chemicals in their sponge food and incorporate these chemicals into the mantle glands on their backs where they repel predators.

Beting Bronok, Jul 05

Cow nudibranchs on Singapore shores

Photos of Cow nudibranchs for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map

Pasir Ris Park, Apr 10
Photo shared by Toh Chay Hoon on her blog.

Pulau Sekudu, Jul 15
Photo shared by Loh Kok Sheng on his blog.

Changi, May 08
Photo shared by Toh Chay Hoon on her flickr.

East Coast, Jun 07
Photo shared by Loh Kok Sheng on his blog.


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