Korea has four distinct seasons, and each season has its own special foods, making the variety of food very rich. Moreover, Korea is surrounded by sea on three sides, with cold and warm currents meeting, and fertile tidal flats along the coast, so there are many kinds of fish and shellfish. Koreans, in order to wisely endure the scorching heat and severe cold, developed fermented foods like fish and shrimp sauces long ago. Their processing techniques are highly advanced, and traditional seafood dishes are also well-developed.