My mom found a hammerhead worm in the garden today. Has anyone else ever seen one of these? They are a terrestrial flatworm that is invasive here. They eat earthworms, snails, and slugs. Hammerhead worms are covered in an extremely sticky mucus which contains tiny amounts of tetrodotoxin, the same toxin produced by pufferfish. They are the only land invertebrate known to produce this type of neurotoxin. They don't produce enough toxin to harm humans, but you should definitely wash your hands after touching them, because you wouldn't want to get their secretions in your eyes or mouth. We killed the one we found by putting it in the freezer in some vinegar, since we didn't want it to eat the earthworms in our garden. If you ever see one and want to kill it, don't cut it into pieces, as all the pieces will be able to regenerate into full worms.
