Found in the soil, litter layer, under stones.
Can be found all year round depending on the weather.
Up to 30 cm long - the one on the left is still in its cocoon.
More about Lumbricus terrestris and other earthworms
Found in the mud in ditches and streams.
Can be found all year round, but most easily seen in the warmer months.
Length 10 - 75 mm long, but much of this may be hidden in its burrow.
More about Tubifex and other worms
This earthworm is commoner in wetter soils.
Octolasium cyaneum's colour ranges from blue to purple to pink. It is redder at the front, and has a few yellow segments at the rear.
Fully grown it is 8 - 14 cm long.
For more on Octolasium cyaneum and other earthworms