Watermelons weren’t always as beautiful as they are today, though they’re one of the most hydrating fruits in the world. If we take a step back and look at the history of the watermelon, a “17th-century painting by Giovanni Stanchi depicts a watermelon that looks strikingly different from modern melons.” The painting dates back between 1645 and 1672. The cross-section showed “swirly shapes embedded in six triangular pie-shaped pieces.” Over time, humans bred watermelons to have a red, fleshy interior, which is the placenta. Even though watermelon seeds “boost immunity and heart health and help to control blood sugar levels,” we wouldn’t want to eat that many seeds. We’re happy with the human interference on this one.