If you don’t want go snorkeling and get wet, you can still see Guam’s marine life up close at Fish Eye Marine Park. Visitors, dry and snug, observe the reef creatures from inside an air-conditioned glass cylinder that extends down below the water—it’s like sitting in a fishbowl turned inside out. About 200 species of fish live in this section of the reef; equally interesting are the scuba divers peering back at you.