Do you know the favorite food of Japanese? They love Sushi! Sushi is nothing but raw fish sliced in different shapes and sizes.

Of course, fresh produces are tasty aren't they? Japanese loved to eat the fresh fish. The market for fresh fish in Japan grew so big that fishermen earned a good deal in catching fresh fish.

Weeks and months passed by! The fishermen were unable to get fresh fish quickly. They took their boats to longer distance in the sea. The fishing boats...