Earthworm (cluster)

Moist soils rich in organic matter, compost piles, and beneath leaf litter or logs.

Detritivores: they consume organic matter in soil, including decaying leaves, roots, and microorganisms.

Nocturnal and subterranean; they emerge or cluster during periods of heavy rain to avoid drowning or to migrate. They are hermaphroditic and play a key role in soil aeration.

Extremely beneficial for ecosystems by decomposing waste and improving soil structure. They pose no risk to humans, though some species are considered invasive in certain forest environments.