Scientists have classified all seaweeds into different groups based on the pigments, cell structure, and specific traits. There is green algae, which is sea lettuce or ulva; brown algae such as kombu or kelp (ever notice kombucha tea can be brown?!); red algae, such as dulse and laver, and nori; and blue-green algae, such as spirulina and chlorella (many put spirulina in their smoothies).
Fun fact: Red algae seaweed is the type you use to wrap your sushi in.
Seaweed can be extremely beneficial externally and internally to your body. There is a rich amount of vitamins and minerals. Seaweed has more nutrients than any land vegetables. It is also a micronutrient that includes folate, calcium, magnesium, zinc, iron, and selenium. Seaweed also has antioxidants. If you’re on a healthy diet, seaweed can protect oxidative stresses. It also helps avoid chronic diseases such as cancer and digestive problems. Seaweed has other types of carbohydrates that we tend to have a deficiency in; the digestive enzymes to digest. That includes carrageenan, fucan, galactan, and more. Seaweed is a fascinating nutrient for us so next time you are swimming and come upon a clump of seaweed, don't be scared....it's your friend and good for you. After all, what you eat influences the bacteria that controls your gut hence the saying, "You are what you eat!"