Earthworm

Moist soil rich in organic matter, leafy gardens, and underground burrows

Decomposing organic matter, including decaying leaves, soil nutrients, and small microorganisms

Nocturnal and subterranean; they emerge to the surface at night or during heavy rain and remain underground to avoid desiccation

Extremely beneficial to the ecosystem; they aerate soil and recycle nutrients. They pose no significant risk to humans.