Flora index
Fauna index
guide to the mangroves of singapore
Peanut Worms (Sipunculids)
Peter K L Ng and N Sivasothi (editors)
Peanut worm
Phascolosoma arcuatum

8-10 cm

The peanut worm is common in mangroves, especially in areas with slightly harder mud.

It is a detrital feeder, with a mouth surrounded by short tentacles which can be extended via a proboscis-like structure (the introvert) a considerable distance from its deeply buried body.

Peanut worms belong to a group called pseudocoelomates, whose evolutionary history is not well understood.
close-up of peanut worm with proboscis extended
Peanut worm dug out
of mud to expose
its entire length

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What is mangrove?

The Ecosystem


Indirect uses
Potential uses

About Mangroves
in Singapore

Mangroves to visit
From "A Guide to Mangroves of Singapore", Peter K. L. Ng and N. Sivasothi (editors)
Volume 1: The Ecosystem and Plant Diversity and Volume 2: Animal Diversity
Authors: Kelvin K. P. Lim, Dennis H. Murphy, T. Morgany, N. Sivasothi, Peter K. L. Ng,
B. C. Soong, Hugh T. W. Tan, K. S. Tan & T. K. Tan
BP Guide to Nature Series published by the Singapore Science Centre, sponsored by British Petroleum
2001 Raffles Museum of Biodiversity Research, The National University of Singapore & The Singapore Science Centre