Nori seaweed is dried and roasted seaweed, made from red Porphyra seaweed. It can be used straight from the package as a snack, for sushi, or as a seasoning for various pasta dishes, wraps, etc. Ideal for seaweed soup and rice balls. Sea seaweed is a rich natural source of minerals, trace elements, and rare earths. It contains high concentrations of calcium, sodium, potassium, iron, and magnesium, and is rich in vitamin A.