nudibranchs text index | photo index
Phylum Mollusca > Class Gastropoda > sea slugs > Order Nudibranchia
Sargassum nudibranch
Crosslandia daedali
Family Scyllaeidae
updated May 2020
Where seen? This extremely well camouflaged nudibranch was seen among Sargassum seaweeds (Sargassum sp.) at St. John's Island.

Features: About 3cm long. It has a pair of 'flaps' (mantle lobes) in the middle of the body. There are fluffy structures (dendritic gill-like structures) inside the mantle lobes. The brush-like rhinophores are tiny and are at the tip of a huge rhinophore stalk. Along the sides of the body it has a few bright blue spots and white spikes.

What does it eat? This nudibranch grazes tiny hydroids that grow on seaweeds.

St. John's Island, Jan 06

Tiny brush-like rhinophore at the tip
of long rhinophore stalk.
Sargassum nudibranchs on Singapore shores
On wildsingapore flickr
Other sightings on Singapore shores

St. John's Island, Oct 11
Photo shared by Toh Chay Hoon on her blog.

St. John's Island, Oct 11
Photo shared by Toh Chay Hoon on her blog.

St. John's Island, Oct 11
Photo shared by Toh Chay Hoon on her blog.
Big Sisters Islands, Jan 2019

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.
  • 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.
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