Square watermelons were invented in 2001 by a Japanese farmer concerned about consumers not being able to fit the fruit into their fridge. There is no genetic changes in the watermelon, they are simply grown inside a box, and assume the box's shape. The square watermelons end up in the exact dimensions to fit comfortably into a Japanese refrigerator. In Japan they cost a bit more, however, at about $82, three times that of a normal watermelon. Recently, Tesco in the UK (a kind of UK WalMart) has started selling these for around £5, importing them from Brazil. And also recently, an agriculture and applied biotechnology student from Vietnam has produced square watermelons for the lunar New Year. During this time, watermelons are offered to ancestors. The ideal offering is a regular watermelon paired with a square one, as a square represents the earth and a circle represents the sun.