Earthworm

Moist soil, leaf litter, and compost throughout temperate regions.

Decomposing organic matter, including decaying leaves, roots, and soil microbes.

Nocturnal burrowers that emerge at night to feed and mate. They are hermaphroditic and play a key role in aerating soil.

Highly beneficial to ecosystems as they improve soil structure and nutrient cycling. They are harmless to humans.