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Acorn Barnacle

Semibalanus balanoides

Photo by Machi
Published on Project Noah
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43.5622, -70.2195

Field Notes

Description:

Deeply grooved barnacles. Feeding behavior in photos 4-6

Habitat:

Boulders on the edge of the seashore

Reference Links:

Barnacle - Semibalanus balanoides - Overview, Semibalanus balanoides

Species ID Suggestions

Rock Barnacles

Semibalanus balanoides

Reference Link
Christine Y.
1

Comments (1)
Christine Y.
You can tell that these are Semibalanus because when you look inside the dead ones, you can see rock, which means that the base is membranous, not calcareous. The big ones look like they are 2 years or older. Love the pictures that you added of the cirri!

Spotted for Missions

Mission
Coastal Wildlife of Northeastern U.S.
Mission
Wildlife of Northeastern USA
Mission
BioBlitz, Maine
Mission
New England Arthropods

Tags

Photographed
PublishedMay 17, 2016

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