Shijimi clams are one of the seven delicacies of Lake Shinji. The type of shijimi taken from Lake Shinji is called yamato shijimi, which are bigger than other types of shijimi. Early in the morning, you can see fishermen in boats on Lake Shinji fishing for clams. Many restaurants in Matsue serve shijimi-shiru, a soup full of the clams. See
Lake Shinji for more info.