You see small gloothworm tubes.
Those gloothworm tubes are still growing. They should be left alone.
Location
Underground Glooth Factory - Gloothworm Farm.
Notes
Wait until they grow up and turn into Small Gloothworm Tubes (Floss), then use a Rake on them in order to complete the Glooth Factory Quest - Tending Gloothworms - Rake Away.
Dropped By
No creatures drop small gloothworm tubess.