Most worms in the Annelida phylum can regenerate lost segments to some extent, but many will die if you cut them in half laterally. The tail end of a common earthworm is sometimes able to ...

If a fish gets close, they’re ready. Bobbit worms have two-part jaws that can move in and out and are sharp enough to cut a fish in two. That’s why they’re also known as “trap-jaw worms.” ...

Worms are tough little creatures. If you accidentally cut an earthworm in half while gardening, only half will die. The piece with the saddle (the fatter, pink part) will survive. When it's really ...