Barnacles

Acorn barnacles

Related to crabs and shrimp, barnacles cluster on surfaces at every level of the intertidal zone. They attach themselves headfirst and use their feathery legs to absorb oxygen and net food that floats by. Barnacles’ shells are a series of connected, overlapping plates. Some are volcano shaped and some are camouflaged to their surroundings. Varieties include the acorn, pink, and gooseneck barnacles.