mussels, barnacles and seaweed at pill creek

abstract algae arthropod barnacle beach biology bivalve bladder bluegreen brown chlorophyceae crab creek crustacea cyanophyceae estuary fal foraging form green hermaphrodite kelp low marine mollusc mollusca molluscs mollusk mud mussels phaeophyceae postcard rhodophyceae river seafood seaweed seaweeds shape shapes shell shore shoreline texture tidal tide wrack