Bohol
nudibranch
Discodoris boholiensis
Family Discodoridae
updated May 2020
Where
seen? This large flat nudibranch is often seen on many
of our shores, usually near coral rubble or reefs. Sometimes, several
may be seen during one visit. It is named after the Bohol Islands in the Philippines.
Features: 6-10cm long. The hard
body is broad and rather thin and flat, and covered with small brown-tipped
bumps. Distinguished by the prominent hump along the centre of the
otherwise flat animal. Patterns and colours are quite variable, generally
brownish to black with paler markings. The flower-like gills are dark
brown with white lines. Rhinophores large and thick with white stripes
and bars.
Avoid handling the animal as it easily breaks off (autotomises) portions
of its body (mantle skirt). Under the mantle skirt is the foot with
another pair of tentacles.
What does it eat? It eats sponges. |
Sentosa, Jan
06 |
Rhinophores. |
Feathery gills. |
Underside.
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A pair of tentacles on the underside.
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Egg mass laid by the nudibranch.
Changi, Jan 20
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Tiny one.
Cyrene, Jun 08 |
Chunks of the body broken off, but still alive.
Pulau Semakau, Jan 05
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Bohol
nudibranchs on Singapore shores |
Other sightings on Singapore shores |
Tuas, Jun 10
Photo shared by Toh Chay Hoon on her
blog. |
Beting Bronok, Jun 10
Photo shared by Loh Kok Sheng on his
blog. |
Changi, May 18
Photo shared by Jianlin Liu on facebook. |
Seringat-Kias, Nov 14
Photo shared by Loh Kok Sheng on facebook. |
Lazarus Island, Nov 19
Photo shared by Kelvin Yong on facebook. |
Big Sisters Island, Jan 20
Photo shared by Jianlin Liu on facebook. |
Terumbu Selegie, Jun 11
Photo shared by Neo Mei Lin on her
blog. |
St John's Island, Feb 24
Photo shared by Kelvin Yong on facebook. |
Kusu Island, Jul 20
Photo shared by Jianlin Liu on facebook. |
Pulau Jong, Jun 12
Photo shared by Loh Kok Sheng on his
blog. |
Cyrene Reef, Nov 17
Photo shared by Loh Kok Sheng on facebook. |
|
Pulau Semakau (East), Dec 20
Photo shared by Jianlin Liu on facebook. |
Terumbu Semakau, May 10
Photo shared by Loh Kok Sheng on his
blog. |
Terumbu Bemban, Jun 15
Photo shared by Loh Kok Sheng on facebook. |
Terumbu Pempang Kecil, Jun 16
Photo shared by Marcus Ng on facebook. |
Terumbu Pempang Tengah, May 11
Photo shared by Loh Kok Sheng on flickr. |
Terumbu Pempang Laut, Dec 18
Photo shared by Jianlin Liu on facebook. |
Beting Bemban Besar, Nov 14
Photo shared by Marcus Ng on facebook. |
Terumbu Berkas, Jan 10
Photo shared by Loh Kok Sheng on his
flickr. |
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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.
- 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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