One of them is razor shell living off Thaethan, South Hwanghae Province.

It, known to be tastier and cleaner than razor shells living off Ongjin and Ryongyon, is very popular in local and foreign markets.

It is taken in the way of sliced raw, pickled, fermented, steamed and fried dishes. It is very efficacious for stomach trouble, bronchial asthma and other diseases.