Yaravirus is an amoebic virus that is a sole representative of its own class, Mriyaviricetes. It was discovered in the waters of Lake Pampulha in Minas Gerais, Brazil, in 2020. The virus was found to be significantly smaller than any known amoebic virus, and is notable in that 90% of its genome appears to have no homology to previously sequenced amino acids in other organisms. The organism was named after the Brazilian mythological figure, Iara.