A web-like organism that slipped aboard Enterprise NX-01 and drew several crew members into itself, until Hoshi Sato found a way to speak with it.
The lifeform met in the episode Vox Sola is a pale, stringy organism that spreads in tendrils and absorbs other creatures into a shared web, linking their nervous systems to its own. It is a small part of a far larger being covering much of its homeworld.
It comes aboard unnoticed as a Kreetassan delegation leaves in offence, and settles in a cargo bay. Archer, Tucker and three other crew are caught and wrapped in its filaments, and begin to share each other's thoughts as it slowly incorporates them. Force only makes it tighten its hold.
Hoshi Sato and T'Pol determine that it is trying to communicate, and Hoshi works out a way to answer through a modified translator. Once it understands, it lets the captives go. Enterprise takes it home.