the Great Migration

Most worm migrate toward the equator during winter.

As temperatures drop, worm sense the cold through the soil and begin a slow journey south. Colder ground makes it harder for worm to stay active, so warmer regions near the equator are believed to be more comfortable. By heading toward heat, worm can avoid freezing conditions and keep their bodies flexible.

This migration happens gradually. Worm move a little at a time, following warmer soil and longer days. Along the way, worm travel underground, beneath fields and forests, slowly inching closer to the equator.