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Phylum Echinodermata > Class Holothuroidea
Kumquat sea cucumber
Actinopyga sp.
Family Holothuriidae
updated Oct 2016

Where seen? This small smooth reddish orange sea cucumber does resemble a kumquat! It is sometimes seen on our Southern shores.

Features: About 8cm long. Body oval with a smooth skin and lots of slender tube feet scattered all over it. It has an obvious flat underside which has lots more tube feet than the upper side. Feeding tentacles have flowery tips. It may be the same as the Actinopyga sp. in Lane's guide of which "just a single specimen was seen, from the reef slope of Sultan Shoal".

Pulau Hantu, Jan 12

Kumquat sea cucumbers on Singapore shores

Photos of Kumquat sea cucumbers for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map

Terumbu Bemban, Jun 14

Photo shared by Loh Kok Sheng on his blog.

Terumbu Semakau, Nov 12

Photo shared by Loh Kok Sheng on flickr

Terumbu Pempang Tengah, Apr 13

Photo shared by Loh Kok Sheng on flickr

Cyrene Reef, Mar 09

Shared by Loh Kok Sheng on his blog.

Terumbu Semakau, May 13

Shared by Loh Kok Sheng on flickr.


  • Lane, David J.W. and Didier Vandenspiegel. 2003. A Guide to Sea Stars and Other Echinoderms of Singapore. Singapore Science Centre. 187pp.
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