When volcanic rock and large iron deposits collide with the eroding powers of the ocean, red sand beaches are born. There are three major red sand beaches in the world: Kokkini Beach in Greece, Kaihalulu Beach in Hawaii, and one in the Galapagos.
Maldives is the ultimate island destination. Many resorts are their own islands and feature personal cabanas attached by plank walkways over the water. See the famous bioluminescent phytoplankton beaches on Vaadhoo Island at night that look like an ocean
Australia's Amazing Bioluminescent Lake (Also Bioluminescent Bay in Puerto Rico). An unusually high concentration of Noctiluca scintillans, a bioluminescent microorganism, turned the water a bright, glowing, ethereal blue.
Lake Retba also known as Lac Rose meaning Pink Lake, lies north of the Cap Vert peninsula of Senegal. Named for its pink waters caused by Dunaliella salina algae and is known for its high salt content, up to in some areas.