Select larger watermelon with umblemished shining skin. Ripe fruit should have a light thudding sound when tapped or knocked. Thicker skin and porous flesh usually indicate a sweet flavor.
Keep whole ripe fruit in a cool place. It is best to refrigerate cut watermelon and cover with plastic to prevent drying (Parkinson, 1989). Watermelon juice can also be frozen for longer storage.
Watermelon flesh may be white, pale pink or bright red. The white flesh variety is the least sweet. In the Pacific, watermelon grows best in the summer months (Malolo et al., 2001).