However, internal cracking can also happen naturally because of overripeness, improper storage, inconsistent watering during growth, or differences between watermelon varieties. If the flesh is still firm, juicy, and smells normal, the cracks may simply be a quality issue rather than a safety problem.
The article recommends being more cautious when the flesh looks loose, dry, mealy, or spongy in addition to having large hollow areas. A watermelon with an unpleasant smell, unusual discoloration, sliminess, or other signs of spoilage should also be discarded rather than eaten.
When choosing a watermelon, look for one that feels heavy for its size, has an even shape, and is free from major bruises or soft spots. Most watermelons are perfectly safe, and seeing a crack alone is not proof that chemicals were used or that the fruit is harmful.
