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Phylum Arthropoda > Subphylum Crustacea > Class Cirripedia
Goose barnacle
Lepas sp.*
Family Lepadidae
updated Mar 2020
Where seen? Ocassionally, you might come across this stalked barnacle growing on objects that used to float in the open sea, such as large logs washed ashore. Goose barnacles usually die once they are stranded on the beach.

Features: To about 2cm across. The outer shell is clam-like made up of five thin white plates. The opening may be red, orange or bright yellow. A leathery stalk attaches the animal to a hard surface. Unlike the more commonly seen shore barnacles, goose barnacles don't have an operculum to close the opening in their shells. Like other barnacles, feeds with its feathery feet. Some species of Goose barnacles can grow very large, with shells 5cm long and a stalk 20cm long!

Sisters Island, Jul 04

Leathery stalk attaches the clam-like
shell to a hard surface.

No operculum to seal the shell opening.

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

Goose barnacles on Singapore shores
On wildsingapore flickr


  • 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.
  • Debelius, Helmut, 2001. Crustacea Guide of the World: Atlantic Ocean, Indian Ocean, Pacific Ocean IKAN-Unterwasserachiv, Frankfurt. 321 pp.
  • Jones Diana S. and Gary J. Morgan, 2002. A Field Guide to Crustaceans of Australian Waters. Reed New Holland. 224 pp.
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