Swamp Worms hid under the murky waters of Florana, and spat large balls of goo at Ratchet as he progressed through the swamp. They; however, did not seem to have any problem with the natives. They could be used to kill off other enemies with their slime attack by clever maneuvering. When they were killed, they did not disappear in a red light but roared and sunk into the mire.

The Swamp Worms had dark red-brown tentacles on their heads facing downwards, resembling beards, and three yellow-orange eyes. Their black heads were pointed, and their ears were pointed and straight, facing outwards, almost resembling horns.