Dried seaweed is good for you when eaten in moderation — it contains many vitamins and minerals, but is quite high in sodium and iodine.

Seaweed has been used for centuries in beauty and pharmaceutical products. It is sometimes used to treat conditions like metabolic syndrome and osteoarthritis. Seaweed is also a popular ingredient in many Asian dishes. Although rare, an allergy to seaweed can develop in some people when seaweed is eaten or touched.

According to "The New York Times," Undaria pinnatifada or wakame seaweed can be one of the world’s most invasive and aggressive species -- capable of growing an inch per day, edging out any local marine life and choking up beaches. However, it’s not just a pest.

A type of dried seaweed that is commonly used in Japanese and Korean cuisine, nori is typically available in thin sheets that are cut or torn into smaller pieces. The smaller pieces are then used to wrap around a bite-sized portion of rice, as a garnish or in a variety of sushi dishes.

Seaweed may be the bane of your existence during post-beach showers, but as a cosmetic ingredient, it can be surprisingly beneficial for your skin. Apart from its ultra-hydrating qualities, seaweed boasts anti-aging and anti-inflammatory benefits.

You may know that vegetables are good for you, but you may not know that sea vegetables should also be included in a healthy diet. Kelp and seaweed are loaded with nutrients and are a source of essential vitamins. Kelp is a type of seaweed found in ocean waters all over the world.