Watermelon refers to both fruit and plant of a vine like herb originally from southern Africa and one of the most common types of melon. The watermelon fruit is sweet and juicy, while usually red, it can sometimes be orange, yellow or pink. A watermelon contains about 6% sugar and 92% water by weight. The watermelon rinds are also edible, the can be stir-fried, stewed and often pickled.