1, the appearance of different: seaweed is purslane, red algae, red algae family. Algae body has purple or white, by a single layer or two layers of cells to form a membrane, leaf-shaped, heart-shaped, band-shaped and so on. Kelp is the algae of the algae animal kelp family kelp. Animal shape: algae body brown, long band, leathery, ordinary 2-6 cm long, 20-30 cm wide.

2, the family is different: seaweed is the red algae, red algae family. Kelp is a brown algae, kelp family.

3, the growth of different environments: seaweed, growing in the growth of the cold zone, seaweed after baking texture crispy, melt in the mouth, especially after the seasoning process, added grease, salt and other seasonings, it turned into a particularly tasty "seaweed". Kelp, grown in low-temperature seawater, is a kind of edible seaweed, which can be used in mixing, burning, stewing, simmering and other cooking methods.