Project Description


Scientific name: Various species such as Semibalanus balanoides (Acorn Barnacle)
Size: Up to 3cm across (usually much smaller)
Colour: Off-white or cream
Habitat: Rocky shores, on bare rock faces

  • Barnacles push a feathery ‘hand’ through a hatch in the top of their shell, which they use to catch plankton.
  • When young, they drift around in the ocean resembling very small shrimps.
  • Despite looking rather like a limpet, they are actually related to crabs and lobsters.
  • Their shells are quite fragile, so you need to be careful when walking on the rocks.

Photo credit: Paul Naylor