Guam is gifted with the pristine and plentiful marine life, offering divers a memorable diving experience. As divers descend into the blue hole that starts from 18 meters to an unreachable 70 meters with extraordinary visibility, they could seek for some large tuna and reef sharks there. Furthermore, there is no other place like Guam where one can touch two wrecks from two different world war at the same time under the water, this definitely makes a memorable achievement and brings diver an historic adventure. And for sure, there are more and more dive sites waiting for divers to explore in Guam.