fucus vesiculosus, bladder wrack or rockweed hanging from a wet rock. also known as black tang, sea oak, black tany, dyers fucus

algae background baltic bark beach bladder bladderwrack brown closeup coast coastal detail diet dried edible flora food fucus green herb iodine kelp leaf life loose marine natural nature nutrient nutrition ocean outdoors plant rock sand sandy sea seaside seaweed supplement texture tide vesiculosus water weed wet wood wrack