Skip to Main Content

Extremohpiles: Acidophiles

Year 11 Biology

New Scientist


Search articles from New Scientist digital magazine on Extremophiles.


An acidophile is an organism that thrives in an acidic environment, with a pH range typically below 5.5. These organisms are adapted to survive and grow in conditions of low pH, and they can be found in a variety of habitats, including sulfuric acid pools, acid mine drainage, and acidic soils.

Biology Online

An acidophile is an organism that can or must live in an acidic environment. An acidic environment is one that has a pH below 6. Acidophiles are able to live and thrive to a highly acidic environment, particularly at pH 2.0 or below. Acidophiles are considered as an extremophile.



Biology Professor (Twitter: @DrWhitneyHolden) describes the 3 classifications of bacteria based on pH preferences, including acidophiles, neutrophiles, and alkaliphiles. Examples are given of places where you might find each class.,

Academic Searching

Google Scholar Search

Always consider how you search.  If you use inverted commas (eg. "Ancient Egypt") you will perform a more accurate search. 

Also, consider limiting the results to educational insitutions by adding to your search terms

National Geographic

Extremophiles are organisms that can live in exceptionally harsh environments. Find out about the different types of extremophiles, their adaptations, where they live, and which one is considered to be the most resilient creature on the planet.



Open access to scientific reports on acidophiles. 

Science Direct

Acidophiles are organisms that grow at an optimum pH below 3–4. These are a diverse group of organisms included in archaea, bacteria, fungi, algae, and protozoa growing in acidic conditions, reported from natural environments like solfataric fields, sulfuric pools, and geysers, and artificial environments like areas associated with human activities like mining of coal and metal ores.