Mites

There are over 20,000 species of mites, tiny anthropod invertebrates belonging to the class Arachnida. Along with the tick, they make up the order Acarina. Mites can be found worldwide in diverse habitats, including brackish water, fresh water, hot springs, soil, plants, and mosses as well as upon and inside animals. Parasitic forms may live in the nasal passages, lungs, stomach, or even deeper body tissues.