They are dying off so fast that it is frightening. Melons aren't the only food that depends on bees. Our food supply is in danger because our bees are in danger. One third of the food we eat is dependent on pollinators. We couldn't grow these foods if we didn't have bees or other insects to pollinate these crops.
Watermelons are only one of many foods that require pollination.
Watermelons, cantaloupes, strawberries, blueberries, blackberries, raspberries, apples, cherries, oranges, peaches, and kiwifruit are other examples of fruits that are dependent on bees to produce fruit. Without bees these fruits would not grow. With only a few bees they can grow but will not make good fruit. Vegetables such as cucumbers, squash, and some varieties of peas and beans must also have bees to have a yield. The cucumbers on the left are well pollinated and will taste and keep well.