July 31, 2020

According to a study by a Pune-based institute, the colour of water in Lonar lake in Maharashtra’s Buldhana district turned pink in June 2020 due to a large presence of the salt-loving Haloarchaea microbes.


  • Haloarchaea (or halophilic archaea) are aa class of the Euryarchaeota, found in water saturated or nearly saturated with salt.

  • Halobacteria are now recognized as archaea, rather than bacteria and are one of the largest groups.

  • These microorganisms are members of the halophile community, in that they require high salt concentrations to grow.

  • Their high densities in the water often lead to pink or red colourations of the water (the cells possessing high levels of carotenoid pigments, presumably for UV protection).