Nematodes or eel worms are small, non-segmented worms. Most nematodes have a beneficial role in the soil, but we tend to know more about the pest species because of their impact on agricultural land. Nematodes live mainly in soil, where they feed on fungi, bacteria, and other soil organisms and in some cases, plant roots. This fact sheet details information on nematodes – what are the different types, what is the role of nematodes in the soil, where are nematodes found, management effects on nematodes, and nematodes as indicators.