2. Palau, Micronesia
With its 307 islands, Palau is well-known as one of the best scuba diving locations in the world. Many divers say it is incomparable to any other area on the planet. Swim with jellyfish (the jellyfish of Jellyfish Lake are safe to humans) for an enchanting experience or simply explore the corals and other underwater life that awaits you. Don’t miss dives such as Blue Corner and German Channel.