Japan's main agricultural product is rice, and most rice eaten in Japan is home-grown. Since Japan has little arable land compared to its population, it cannot grow enough wheat, soybeans, or other major crops to feed all its citizens. In fact, Japan has one of the lowest rates of food self-sufficiency of all industrialized countries. This means it has to import a high percentage of its food from abroad. Japan does, however, have abundant marine resources. Fish is an important part of the Japanese diet, and Japan's fishing industry is very active.