Street in Bonn, Germany

Street in Bonn, Germany

Image credits: Adas Meliauskas

Cano Cristales- The River of Five Colors

Cano Cristales is a river located in northern part of Colombia, in “Sierra de la Macarena”. A unique biological wonder, Caño Cristales has been referred as the "river of five colors," "the river that ran away from paradise," and "the world's most beautiful river " due to the algae produced colors like red, yellow, green, blue and black at the bottom of the river giving it a unique appearance. The river is less than 100 km long and 20m wide.

Color of the river depends on the season and the amount of water. During Colombia's wet season, when the water flows too fast and deep, a unique species of plant that lines the river floor called Macarenia clavigera turns a brilliant red. when the water is enough to let the sun reach the mosses and algae, the nature “blossoms”. But for a few weeks from September through November, the river transforms into a veritable living rainbow.

credit:unbelievableinfo.com

The Pink Lake in Australia

Lake Hillier is a peculiar pink lake located in Middle Island Western Australia. The reason behind the lake´s intriguing pink color is still a mystery and remains under investigation.

Lake Hillier is a lake colored pink in Middle Island, the largest island of the other islands that make up the islands Recherche, Western Australia. The lake has water that pink color like bubble gum. The uniqueness that makes this lake is the main attraction for local and foreign tourists. Lake has an area of ​​600 meters along the sand and surrounded by a dense forest of eucalyptus trees. Dunes and a variety of plants that surround the lake is separates from the Southern Ocean.

The pink color of the lake is not a trick of the light. You can prove it by taking water and put it in the container. The pink color will still be visible because of settling permanently in the lake water.

The reason behing the Pink color is in Hillier Lake is still a mystery. However, speculation can be said that the color comes from dye produced Dunaliella salina and Halobacteria organisms that live in this lake. Another hypothesis, pink color appears because red halophilic bacteria and crust of salt contained in the water.

Amusing Planet page reported that Hillier Lake was discovered by Matthew Flinders, a British navigator and   hydrographer. In 1802, Flinders climbed the highest peak in the island (now known as Flinders peak) to                                                            survey the surrounding waters.