After US had dropped atomic bombs ‘Little Boy’ and ‘Fat Man’ on Hiroshima and Nagasaki in 1945, sea water along the coasts had become contaminated. As a result, many fishes had died or had become contaminated. Now, fisherman in the coastal areas, had a tough scenario to deal with. They had to go far and wide into the ocean to catch alive and healthy fishes. By the time fisherman used to come back to the beach and go to the market, fishes would become stale and lose the taste. Customers would refuse to buy or pay less price for it. To overcome this challenge, they thought of using freezers in their boats in which they can keep the fishes frozen after catching them. They started using freezers. Customers still didn’t like the taste of frozen fishes and still were not willing to pay high price for the fishes. Fishermen’s problem was still not solved. Then they thought of replacing freezers with water tank. Intent was that fishes need natural habitat by the time they can be brou...