sea slugs text index | photo index
Phylum Mollusca > Class Gastropoda > sea slugs > Order Sacoglossa
Bryopsis slug
Placida sp.*
Family Limapontiidae
updated Jun 2020
Where seen? This superbly camouflaged slug is actually quite common on many of our shores, particularly when there is a bloom of Bryopsis seaweeds. At this time, lots of them can be seen even in a small clump of seaweed. But they are really hard to spot.

Features: Tiny, to about 1cm. Long, soft body with lots of finger-like projections (cerata) that are transparent. The digestive system extends into the cerata, and the green stuff is the seaweed 'juices' sucked up by the slug. Some have a white stripe along the upperside of the body. There is also a pattern of little lines on the sides of the body. Pale narrow foot. One pair of long rhinophores, no oral tentacles.

The egg mass is coiled, sausage-shaped mass and very sticky.

Two species are recorded for Singapore: Placida daguilarensis and Placida dendritica

Sometimes seen in large numbers.
Sisters Island, May 12

Sentosa, Nov 03

Sometimes seen floating
upside down on the water surface.
Sisters Island, May 12

Tiny white one, perhaps it hasn't
eaten enough seaweed yet?
Sentosa, Aug 04

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

Bryopsis slugs on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores


Changi, May 17
Photo shared by Heng Pei Yan on facebook.

Chek Jawa, May 16
Photo shared by Toh Chay Hoon on facebook.

Beting Bronok, Jul 19
Photo shared by Toh Chay Hoon on facebook.


East Cost Park, Aug 18
Photo shared by Toh Chay Hoon on facebook.

Sentosa Serapong, May 12
Photo shared by Loh Kok Sheng on flickr.

Kusu Island, Apr 17
Photo shared by Toh Chay Hoon on facebook.


Pulau Hantu, May 19
Photo shared by Toh Chay Hoon on facebook.

Cyrene Reef, Aug 15
Photo shared by Toh Chay Hoon on facebook.


Terumbu Pempang Tengah, May 11
Photo shared by Rene Ong on facebook.

Terumbu Pempang Laut, May 17
Photo shared by Toh Chay Hoon on facebook.

Terumbu Selegie, Jan 17

Photo shared by Toh Chay Hoon on facebook.


Pulau Salu, Apr 21
Photo shared by Toh Chay Hoon on facebook.

Links

References

  • K. R. Jensen. Sacoglossa (Mollusca: Gastropoda: Heterobranchia) from northern coasts of Singapore. 10 July 2015. The Comprehensive Marine Biodiversity Survey: Johor Straits International Workshop (2012) The Raffles Bulletin of Zoology 2015 Supplement No. 31, Pp. 226-249.
  • Kathe R. Jensen. 30 Dec 2009. Sacoglossa (Mollusca: Gastropoda: Opisthobranchia) from Singapore. The Raffles Bulletin of Zoology, Supplement 22: 207-223.
  • 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.
links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008