There are 4,400 different types of worms, and 2,700 different
kinds of earthworm. The other types of worm are leeches and tapeworms.
are about 50,000 earthworms per acre of moist soil. Earthworms live in deep, dark, long,
and narrow tunnels or burrows under the ground, They don't like the heat and sun and so
during the summer they come up to the surface only at night.
The worm's body is divided into 100 or more body segments. When a bird
tries to pull an earthworm out of the ground, the worm uses these bristles to hold on
tight to the wall of its home. Sometimes the worm holds on so tight and the Robin pulls so
hard that the worm comes apart.
The earthworm has no lungs and takes in oxygen through its moist skin - it is a
skin breather. If it dries out it will suffocate.