Deep beneath the surface of the bladderwrack fucus vesiculosus Atlantic and Pacific Oceans, grows a potent brown seaweed known as Bladderwrack (Fucus vesiculosus). While "seaweed" might not sound like a superfood, Bladderwrack is a powerhouse of minerals and antioxidants. It is best known as the original source of Iodine, discovered in 1811.