What do Annelid's feed on?

Answer 1

It depends. Annelida is a phylum, so there is a pretty wide variety. Common earthworms are detritus feeders, mostly eating decaying plant material. Some marine annelids are filter feeders, with a diet consisting of plankton an organic particles. Some annelids are parasitic; leeches, for example feed on the blood of vertebrates.

Answer 2

I myself have heard from my family that they absorb nutrients through their skin, but csiro.au says, "Most earthworms feed on a wide variety of organic matter, primarily detritus and algae. Earthworms are considered to be beneficial animals because as they move through the ground feeding, they ingest huge quantities of soil accelerating the nutrient cycle and increasing its productivity. As earthworms feed they pass out what they do not need in the form of castings. These castings are high in nutrients and are in turn food for other animals. Microorganisms also feed on the castings, breaking them down and releasing nutrients that can be used by plants. The burrowing habits of earthworms are also beneficial, as they aerate the soil and allow rainwater to penetrate deeper into the ground."