It is not kelp. Sea cabbage, also known as sea spinach, sea lettuce, sea strips, moss cabbage, etc., belongs to the algal plant Ulva schreberi family Kongshi Ulva algal body. Mainly distributed in the distribution of the Bohai Sea, Yellow Sea, East China Sea. Many people think that the sea cabbage is kelp, in fact, not, although the appearance of the two look almost the same (sea cabbage form is a long stem in the middle, the two sides similar to the "leaves", extend down, in the sea is normally green, cooked is also green. Kelp is another kind of vegetable, the form is a very long and wide flat surface, the thickness of the center will be a little thicker than the side, in the sea is normally brown, after cooking is green. So sea cabbage is not kelp.