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Phylum Arthropoda > Subphylum Crustacea > Class Cirripedia
Star barnacle
Euraphia sp.
Family Chthalamidae
updated Oct 08

Where seen? This little starry barnacle is sometimes seen on some of our shores. Usually found in small groups, in higher areas where it is too dry for acorn barnacles (Balanus sp.). They were formerly known as Chthamalus.

Features: 0.5-1cm across. The outer shell is rather flat, made up of several wall plates that form star-like rays where attached to the rock. The operculum is beak-like and protrudes from the shell opening. They are often found close to one another, so much so that the 'shells' of individual animals seem to merge together.

Labrador, Apr 05

Tanah Merah, May 05

Star barnacles on Singapore shores


East Coast, Jun 06

Sentosa, May 08

Sisters Island, Jul 06

more photos of star barnacles on Singapore shores
northern shores | southern shores

Links References
  • Lim, S., P. Ng, L. Tan, & W. Y. Chin, 1994. Rhythm of the Sea: The Life and Times of Labrador Beach. Division of Biology, School of Science, Nanyang Technological University & Department of Zoology, the National University of Singapore. 160 pp.
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