Semibalanus balanoides  (Rough Acorn Barnacle)

© Aaron Baldwin (Photo ID #7886)

Photographer's Submitted Details

Photo Location	Auke Bay, Alaska
Photographer	Aaron Baldwin
Habitat	Upper intertidal rocks, near freshwater
Photo Date	June 03, 2009
Upload Date	September 10, 2009
Elevation (m)
Latitude
Longitude
Photo ID #	7886
Comments	Every specimen of these that I have seen has tiny pits and holes in the shells. Unlike the similar Balanus glandula these have no calcareous base and rarely crowd each other.