Beaded
nudibranch
Hoplodoris nodulosa
Family Discodorididae
updated
May 2020
Where
seen? This nudibranch covered in bead-like bumps is sometimes
seen on on our Northern shores among seagrasses and seaweeds. It appears
to be seasonally common, often many seen during a single visit, then not seen again for some time.
Features: 4-5cm long. Hard broad
body covered with rounded bumps of different sizes. With a broad band down
the centre of the body which has fewer or no bumps and is usually
darker in colour. Colour usually pale beige, brown, pinkish. Sometimes with a few darker smudged bars perpendicular to the body margin. The body doesn't fall apart when handled. Gills
feathery and orange. The underside is pale with some smudged darkish
blotches on the margins. The narrow foot is plain. |
Pulau Sekudu, Aug 05 |
Underside.
Pulau Sekudu, Jul 06 |
Rhinophores. |
Feathery gills. |
Egg ribbon laid by the nudibranch.
Pasir Ris, Mar 20 |
An upside down nudibranch turning itself right side up, with a glimpse of egg ribbon nearby, probably laid by it.
|
Beaded
nudibranchs on Singapore shores |
Other sightings on Singapore shores |
Punggol, Sep 18
Photo shared by Dayna Cheah on facebook. |
Changi, Dec 12
Photo shared by Loh Kok Sheng on flickr. |
Changi, Jan 20
Photo shared by Jianlin Liu on facebook. |
Pulau Ubin, Dec 12
Photo shared by Loh Kok Sheng on flickr. |
Chek Jawa, Jan 14
Photo shared by Loh Kok Sheng on facebook. |
|
Pulau Sekudu, Apr 09
Photo shared by Toh Chay Hoon on her
blog. |
Chek Jawa, Nov 07
Photo shared by Toh Chay Hoon on her
flickr. |
Tanah Merah, Jul 09
Photo shared by James Koh on his
blog. |
Cyrene, Feb 17
Photo shared by Loh Kok Sheng on facebook. |
Big Sisters Island, Jan 20
Photo shared by Jianlin Liu on facebook. |
|
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.
|
|
|