Dune Leeches

"'These creatures crawl and squirm underneath the desert sands, causing quakes as they move. They then lie and wait for an oblivious prey to wander above its gaping mouth, then they burst up from the sand, like a shark leaping out of water, and snatch up their meal.' ~ Extract from the Adventurer's Guide. "Typically residing in humid desert regions, the Dune leeches are gigantic carnivorous descendants of the Bloodworm cryptid. Reaching lengths of 20-30 meters (66-98 ft), the Dune Leeches are an excellent source of materials and sustenance, if you survive the encounter.