In biology, detritus is non-living particules of organic origin. Typically, it includes the bodies or fragments of dead organisms as well as faecal material.

Detritus is typically colonized by communities of fungi and microorganisms which act to decompose (break down) the material. In terrestrial ecosystems, leaf litter and other organic matter gets mixed with soil. The result is called humus. Detritus of aquatic ecosystems is organic material suspended in water, which is sometimes referred to as marine snow. Marine snow is the basis of much life on the ocean floor. It is the food of animals which operate as 'filter-feeders'.

Other Languages
Afrikaans: Detritus
العربية: حتات
беларуская: Дэтрыт
български: Детрит
català: Detrit
čeština: Detrit
dansk: Detritus
eesti: Detriit
English: Detritus
español: Detrito
íslenska: Grot
italiano: Detrito
қазақша: Детрит
日本語: デトリタス
norsk: Detritus
norsk nynorsk: Detritus
oʻzbekcha/ўзбекча: Detrit
português: Detrito geológico
română: Detritus
русский: Детрит
српски / srpski: Стеља
srpskohrvatski / српскохрватски: Stelja
svenska: Detritus
українська: Детрит