Where do algae live besides oceans and lakes?

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Algae are nearly ubiquitous and occupy a vast array of environments beyond oceans and lakes. Their distribution is categorized by their specific ecological habitats:

  • Terrestrial and Surface Environments: Algae can be found on soil, on the bark of trees, and even in snow and ice, such as the phenomenon known as red snow.1
  • Rock Surfaces and Fissures: They live on rocks (epilithic), within porous rocks or coral (endolithic), and inside rock fissures (chasmolithic).1
  • Extreme Environments: Some species, known as thermophilic algae, thrive in hot springs.1
  • Associations with Other Organisms: Algae often live on or inside other living things. They may grow on animals like turtles and sloths, or on fungi and land plants. Additionally, they exist as endosymbionts, living inside the cells or tissues of various organisms, including sponges, protozoa, and gastropods.12