Rock Islands, Southern Lagoon, Palau. Spanning a 1000 square km, the Rock Islands Southern Lagoon comprises of a 445 densely vegetated limestone islands surrounded by coral reefs. Located to the south of Babeldaob, in the western Pacific Ocean, the lagoon network boasts a dazzling mixture of local wildlife as well as the remains of island communities dating back three thousand years. It was designated a World Heritage Site in 2012. [Olivier Blaise/Getty Images]
Jellyfish Lake will stun you (no stingers involved)
Nestled within a lush forest on the island of Eil Malk is one of the world's most remarkable snorkeling destinations: Jellyfish Lake. The freshwater diving spot is named quite literally for the millions of jellyfish that spend their days bobbing back and forth across the lake's length.