Fishwatching You don't need to keep fish in fish tanks to appreciate them. Many native fish enthusiasts don masks and snorkels and see sights that rival the beauty of tropical coral reefs! Swimming skills are generally not required since some of the best freshwater snorkeling can be done in (clear) water that's knee- to waist-deep. Just stick your head underwater, remain still, and let the fish come to you. Fish are surprisingly brave and curious when you're in the water with them. (Some like to nip at the air bubbles that stick to your arm and leg hairs.) Stir the bottom sand or gravel with your fingers and watch them feed on the tiny food particles you've released.

If snorkeling's not your thing or the water's too cold, then you can make an underwater viewing bucket by cutting out the bottom of a 5-gallon plastic bucket and affixing a piece of Plexiglas in its place. It really works!