Sliding worms are irregular mutants that appear in Resident Evil 3: Nemesis. A by-product of secondary T-virus infection, these creatures were once normal caterpillars, now grown to the size of large snakes. They slide across the ground seeking out warm-blooded prey and will latch on like leeches and drain victims of their blood.
Sliding worms are also produced as the offspring of the much larger Grave Digger mutants. A single worm is capable of growing into a Grave Digger over the span of a week.
The sliding worms have only appeared during the Raccoon City Incident and were wiped out when the city was destroyed in a nuclear blast.