Snow algae
With snow algae are microscopic freshwater algae that occur on the summer snow and glacier surfaces of polar and alpine regions of the world. Mass occurrences where they lead to green and the highly stylized red colors (blood snow, such as Chlamydomonas nivalis), which are due to the Sekundärpigmentierung the algae. The red color is used for radiation protection because the algae would otherwise burn under the sunlight. Snow algae are biologically expected to Kryoflora. In addition to the plant organisms and animal organisms that Kryofauna, and certain microscopic fungi occur on snow. All these organisms are referred to as Kryoseston and inhabit the habitat Kryal.