Sea of Stars, Vaadhoo Island, Maldives
It may look normal during daylight, but at night, this beach comes to life. The sparkle in the water comes from marine microbes called phytoplankton. The galaxy they paint across the shore is nothing short of breathtaking.
Sadly, the mining company that owns the caves could no longer afford to keep the massive pumps going to clear the chamber. I believe the pumps were shut down a few years ago and the cavern is refilled with water. The crystals are growing once again, but no one will ever see it.