A reader recently wrote to us about a black worm she found on the wall of her house. The worm is also described as “slick” and is about four inches long. The reader’s house is on the east coast of Florida, in a town called Fort Pierce. So, the reader’s worm is from Florida – it is a Florida worm, if you will, although of course the worm she discovered might be found in any number of other places depending on what it is. The reader was also concerned if the worm is dangerous or harmful, as she has a nine-month-old baby in the house. What is this black, slick worm from Florida, and is it harmful?