Detritivores are organisms that feed on detritus or organic waste. They play an important role in the ecosystem by breaking down the dead and decaying animals and recycling nutrients. Detritivores refers to the class of organisms that feeds on detritus or organic waste. For the uninitiated, detritus is organic matter composed of dead trees, plants and animals.
From: https://www.scienceabc.com/nature/animals/what-are-detritivores.html