My favorite sea vegetable is Nori. The Japanese roll rice, seafood, and/or vegetable in it or make hand rolls. I fold Nori into quarter size sheets and roll my salads or individual vegetable in it. I sliced an avocado yesterday, sprinkled cayenne pepper and and herb mixture on it and rolled it up with a sliced raw zucchini, bell pepper slice, an a sliver of onion. I love rolling vegetable in Nori. I also use Dulse that is ground into flakes as a seasoning. You can buy dried seaweed from Japanese markets and soak it and slice it into salads. I've seen and bought raw seaweed salad, which is delicious. Korean markets sell packaged seaweed in their coolers, but it is often packed in salt and needs to be soaked thoroughly before use. I don't buy much of this because it is such a bother. I also like Hijiki, a fine, black sea vegetable, that is soaked and often served with finely sliced carrots and Gobo root. Unfortunately, due to modern farming practice with chemically bases fertilizers, our farm soils are depleted of many minerals and we need to supplement them.