Guardian Nature School Team Contact Blog Project Noah Facebook Project Noah Twitter

A global community of nature enthusiasts
photographing and learning about wildlife

Join Project Noah!
nature school apple icon

Project Noah Nature School visit nature school

Acorn barnacle

Semibalanus balanoides

Description:

Adult S. balanoides grow up to 15 millimetres (0.6 in) in diameter, and are sessile, living attached to rocks and other solid substrates. When the tide rises to cover the barnacles, the operculum opens, and feathery cirri (modified thoracic appendages) are extended into the water to filter food from the seawater.

Habitat:

Widespread boreo-arctic species. These were seen in beaches of Unst, Shetland I.

Species ID Suggestions



Sign in to suggest organism ID

No Comments

The MnMs
Spotted by
The MnMs

Scotland, United Kingdom

Spotted on Jun 14, 2013
Submitted on Jul 25, 2013

Noah Guardians
Noah Sponsors
join Project Noah Team

Join the Project Noah Team