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Phylum Echinodermata > Class Holothuroidea
Polka-dotted sea cucumber
Bohadschia ocellata*
Family Holothuriidae
updated Jan 14

Where seen? This pale sea cucumber with polka dots is sometimes seen on sandy areas among seagrasses at Changi. It was also seen once at the reclaimed shores of Seringat-Kias. It was previously known as Holothuria ocellata.

Features: 6-8cm long. Body cylindrical but with a flat underside, resulting in a ridge along the sides of the body. The polka dots comprise dark circles around very short pale conical bumps. The polka dots are found on the upper and underside. It has short feeding tentacles with bushy tips. Colours pale lilac to white, patterns purplish or brownish.

According to Teo Siyang and Lionel Ng, the sea cucumber prefers to be buried in the sand, and other studies suggest it is usually deeply buried. Indeed, we often only encounter this animal at night or near sunrise.

Changi, Jul 08

Obvious underside.

Feeding tentacles.

Circles around short conical bumps.

*Species are difficult to positively identify without close examination.

On this website, they are grouped by external features for convenience of display

Polka-dotted sea cucumbers on Singapore shores

Photos of Polka-dotted sea cucumbers for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Ossicles of the sea cucumber.

From the paper by Teo and Ng (PDF).

Seringat-Kias, Jun 09
Photo shared by Liana Tang on her blog.
 

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