OFFICIAL BLADDERWRACK FLAKES (Fucus vesiculosus) – is in its normal habitat /environment. It's ocean farmed grown without chemicals and sourced from a trusted grower or supplier who cultivates the sea vegetable without chemicals. Our wild harvested bladderwrack flakes is hand-harvested from the intertidal zone of the pristine coast of Maine. It's a brown seaweed that is short and leafy with air bladders. Then sun-dried to preserve all its nutrients. It contains the most iodine of all the sea vegetables.