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worms > Phylum Platyhelminthes > Class Turbellaria > Order Polycladida
Olive flatworm
Tytthosoceros lizardensis*
Family Pseudocerotidae
updated Oct 2016

Where seen? Many of this large greenish brown flatworm are sometimes seen at night, among seaweeds growing on coral rubble or crawling on the bottom. The flatworm is named in honour of the Lizard Island Research Station in Australia.

Features: 8-10cm. Usually with deep ruffles. Body mottled brown or olive with white dots forming irregular bars perpendicular to the body edge. Margin comprises fine white outer edge with fine black inner edge. Underside is uniformly pale with a wide brownish margin. It has a pair of erect pseudotentacles on the front of the worm made up of folded edges of the body. The tips of the pseudotentacles are white. It can swim by undulating its body edges.

Tanah Merah, Jul 09

Tanah Merah, Jul 09

*
Species are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of display.

Olive flatworms on Singapore shores

Photos of Olive flatworms for free download from wildsingapore flickr

Distribution in Singapore on this wildsingapore flickr map


Beting Bronok, May 09
Photo shared by Loh Kok Sheng on his blog.

Beting Bronok, May 11
Photo shared by Loh Kok Sheng on his blog.


Beting Bronok, Nov 11
Photo shared by Loh Kok Sheng on his blog.

Beting Bronok, Jun 16
Photo shared by Rene Ong on facebook.

Beting Bronok, Jun 16
Photo shared by Rene Ong on facebook.


Changi, Mar 17
Photo shared by Marcus Ng on facebook.

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