Watermelon is a large, sweet and refreshing fruit that is popular around the world, especially during the summer months. It belongs to the Cucurbitaceae family, which includes other fruits such as cantaloupe and honeydew melons. Watermelons have a thick, green rind that is often striped or speckled, and a juicy red or pink flesh that is sweet and seed-filled. There are also seedless varieties of watermelon available. In addition to being delicious, watermelon is also a good source of vitamin C, vitamin A, and potassium, and it is low in calories. It also contains a high percentage of water, which makes it a great way to stay hydrated during hot weather. To choose a ripe watermelon, look for one that is heavy for its size and has a uniform shape. The rind should be dull in color and have a slightly rough texture. You can also tap the watermelon and listen for a hollow sound, which indicates that it is ripe.