Northern rock barnacle

Distribution in scandinavian waters

Maximum diameter: 2,5 cm.
Appearance: Calcareous white-grey shell. The base plate is a thin membrane that does not leave a white scar on the substrate when removed. Barancles usually have a rather flat form, but this species, like a few others, grow upwards. Compare with the bay barnacle and the rock barnacle .
Depth: The Northern rock barnacle can be found from the mean water line to, on rare occasions, a depth of 45 m.
Environment: This species is found attached to e.g. rocks, cliffs, , wood or shells. Along the Swedish west coast, they often build belts along the waterline. .
Classification: The Northern rock barnacle belongs to the cirripedia group, which is a crustacean under the arthropods.

Northern rock barnacle    More facts     Other names

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Bo Johannesson | Martin Larsvik | Lars-Ove Loo | Helena Samuelsson