Watermelon seeds come from the watermelon fruit, which is a member of the Cucurbitaceae family. These seeds are small, hard, and typically black or dark brown. They can be found within the flesh of the watermelon and are often discarded when eating the fruit, though they can be roasted or sprouted for consumption. Watermelon seeds are nutrient-dense, providing a range of vitamins, minerals, and healthy fats.