Around 75% of our skin is made of collagen. It is also important for many parts of the body to function properly such as bones, muscles, tendons, ligaments, etc.. Collagen is very popular as the solution for a younger looking, wrinkles-free skin.
Seaweed Jelly, some peope call it Sea Bird's Nest. Apparently it's collagen is 10 times higher than bird's nest (but a lot cheaper than bird's nest) and it's calsium is 37 higher than fish liver.