stalk of kelp washed up on a sandy beach. kelp is a large brown algae or seaweeds that make up the order laminariales

kelp plant algae california coast ocean pacific washed low tide beach sand eukaryota diaphoretickes sar stramenopiles gyrista ochrophytina phaeophyceae laminariales fronds rocks shore natural nature wet seaweed green closeup close vegetation common blades holdfast protists francisco alga environment