Lake Retba, Senegal (western Africa) Can't believe I had never even heard of this! (Lac Rose/the Pink Lake!) The pink color is from a bacteria that grows in the lake due to it's extremely high salt content.
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.
Ice cave in the Skaftafell National Park in Iceland. Ice caves collapse and new ones form as each glacier grinds slowly towards the sea. Local guides can help you (without dying) find one. (Visit Skaftafell National Park in Iceland.
Lake Retba, Senegal - the pink hue is due to cyanobacteria, a harmless halophilic bacteria found in the water. Lake Retba has a high salt content, much like that of the Dead Sea, allowing people to float effortlessly in the massive pink water
Lake Hillier is a pink-coloured lake on Middle Island, the largest of the islands and islets that make up the Recherche Archipelago, in Western Australia. The lake spans only about 600 meters wide but its rose pink color is unmistakable.