Pufferfish (Fugu) can be eaten as Sashimi or hot pot (Nabe). Pufferfish has poisonous organs and in Japan, it takes a certified chef to deal with them. "Processed" meats are available in markets.
In the western part of Japan, pufferfish is sometimes called "Teppo" which means, rifles or guns, as the poison is very strong.
This is pufferfish skin. It is said that it contains lots of collagen. In Japanese, it is called "Yubiki."
By the way, this is crabs. It is also eaten in hot pots. This is also popular in New year days.