Worms might be less the favorite of many, but it is a very important animal. It ensures that biological waste is consumed and transformed to the best fertilizer possible - humus or worm poo. The most known worm might be the earthworm, which appeared for sure sometimes in the pockets of children. Young parents will know how earthworms feel when washing clothes of their children and discovering this slimy worms.
Interestingly, a worm does not really depend on all segments of its body, as it can easily continue to live when some parts are cut off. Such a wonderful animal that is often underestimated!