Bladderwrack
A type of brown seaweed/sea vegetable.
Bladderwrack grows in the ocean, near the northern coasts of the United States, on both the Pacific and Atlantic sides. It also grows on the northern coasts of Europe, on the Atlantic and Baltic sides.
Also known as rock wrack, black tang, bladder fucus, rockweed, red fucus, and dryer fucus, bladderwrack colonized the North Sea for more than 8,000 years ago.
Since then, the seaweed’s healing powers have been used for conditions such as joint pain, aging skin, hypothyroidism, and plenty more.