worms > Phylum Annelida > Class Polychaeta
Reef bristleworm
Eurythoe complanata*
Family Amphinomidae
updated Nov 08

Where seen? This large active bristleworm is often encountered on many of our shores. On coral rubble near living reefs and seagrasses. It is especially active at night, foraging busily among the rubble. During the day, the worms are often hidden under stones.

Features: About 10-20cm long. Body flat, broad, tapered at both ends. Along the body are two rows of 'bunches' of bristles; long transparent bristles on the upperside, and a row of shorter bristles along the underside.
For each pair of bristle 'bunch' there is a short tuft. Colours greenish or pinkish, sometimes the tufts are red.

According to Leslie Harris, these worms belong to Family Amphinomidae, and appear to be Eurythoe complanata. There is some debate over whether this is one widespread species or a complex of species that look similar.

Pulau Sekudu, Aug 04
Front of the worm

Back of the worm

Two rows of bristle 'bunches'
with tufts

Reef bristleworms on Singapore shores

Labrador, Mar 05


Sentosa, Jun 05

more photos of reef bristleworms on Singapore shores
northern shores
southern shores part 1 | part 2

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

Acknowledgement
With grateful thanks to Leslie H. Harris of the Natural History Museum of Los Angeles County for comments on this worm and a tentative identification.

www.flickr.com
FREE photos of other worms. Make your own badge here.
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