MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY MAURO FERMARIELLO / SCIENCE PHOTO LIBRARY
Earthworms (Lumbricus terrestris) in a petri dish being studied by researcher Elena Guella at the centre of Alpine Ecology, Trento, Italy. These annelid worms inhabit soils, feeding on organic materials. The movement of earthworms through a soil greatly improves its aeration. As well as this, their feeding and excretion helps to recycle minerals and nutrients.
Model release available. Property release not required.