What is lighest fruit?

The lightest fruit in terms of weight is often considered to be the watermelon, particularly due to its high water content, which can make individual fruits weigh very little compared to their size. However, if you're looking for the lightest in terms of small fruits, berries like blueberries or strawberries are quite light and can weigh very little individually. Ultimately, the specific lightest fruit can vary based on size and type, but smaller berries generally fit the criteria well.