Understanding the Threat of Brain-Eating Amoeba Brain-eating amoebas, scientifically known as Naegleria fowleri, are microscopic, single-celled organisms that belong to the phylum Percolozoa. They are primarily found in warm freshwater environments such as lakes, rivers, and hot springs. Despite their minuscule size, these amoebas can have devastating effects when they come into contact with humans. […]