Nematode worms are very simplistic animals and survive in many of the harshest habitats in the world. From the spaces between soil particles to the bottom of the ocean floor there are species of nematodes that have adapted to thrive. It is rumoured that there is even a species of nematode that has adapted to live in soggy bear mats.

Most nematode species are very small, about 1mm long. The largest however lives in the gut of whales and can reach a staggering 8m in length. All however have long, thin unsegmented bodies. Nematodes can by parasitic, herbivorous, detrivors and carniverous. Their mouthparts depend on their food, though most hve six lips.