In rainy weather on the ground, you can see a large number of earthworms and one of them even moved into our animal cursor for a mouse! Earthworms are very beneficial for the soil of the earth, as they improve the availability of nutrients and also make channels for water and air. This terrestrial invertebrate lives all over the world, except for the polar deserts. Amazing earthworms have well-developed body muscles and many light-sensitive cells because their eyes are missing.
