The phrase "slimy creatures" refers to animals or things that are covered in a slippery, gooey substance called slime. It is used to describe things that are gross or unpleasant. Full definition
Debt collectors are among the most creative, diligent, and slimy creatures on the planet. (mymoneycounselor.com)
But to summarize the take - away of this book, human beings better wake up to the fact that we are intimately - super intimately - dependent upon most of the yucky, slimy creatures from which we're currently trying to escape. (bookbrowse.com)
Back when I roamed those mountains hunting for slimy creatures in the dark, I mostly came back empty - handed. (slate.com)