Sometimes called "diving's best-kept secret" the western Pacific island of Guam has some of the most amazing diversity in the marine world. It is Micronesia's largest island but is only 30 miles long and ten miles wide. But small things come in excellent packages as divers will find more than 400 coral species, 1000 fish species, 14 marine mammals and numerous invertebrates. This makes the island a treasure trove of undersea wonders. Add...