Kelp
Kelps are large brown algae seaweeds that make up the order Laminariales. There are about 30 different genera.
Kelp noodles
Kelp noodles are cholesterol, fat, gluten-free and also rich in nutrients. A 1/2 cup serving includes 186 milligrams of sodium, 134 milligrams of calcium, 2.28 milligrams of iron, and 52.8 micrograms of vitamin K. They are a good dietary source of iodine. Consumers with thyroid and heart disease should take the sodium and iodine content into account.