Wirrn Larvae (Organic Creatures)

Biological offspring of the Wirrn species, observed exhibiting natural feeding behaviors in cryogenic chamber debris

2 appearances

Purpose

To infiltrate and control host organisms through parasitic implantation, facilitating the propagation of its larval offspring by preserving adult hosts in cryogenic stasis until readiness for consumption.

Significance

The larvae prove the Wirrn threat remains active even after the queen’s death, forcing Vira to abandon revival protocols and confront the station’s collapse. Their presence escalates the crisis from speculative contamination to immediate, physical peril for everyone aboard the Ark.

Appearances in the Narrative

When this object appears and how it's used

2 moments

S12E7 · The Ark in Space Part 3

Discovery of alien larva amid awakening crisis

Two green Wirrn larvae wriggle across metal debris in the chamber, emerging from the station’s ductwork. Their sudden appearance transforms Sarah’s grim briefing into tangible peril, evidencing the larvae’s mobility and the incomplete nature of the queen’s death. Their presence directly coerces the Doctor into immediate action and forces the crew to abandon passive acceptance.

Before: Concealed within station systems, likely feeding or seeking new hosts.

After: Visible and mobile, slithering into the chamber’s transom area, directly threatening the crew.

View full event

S12E7 · The Ark in Space Part 3

Vira enforces revivification amidst terror

Two Wirrn Larvae wriggle through the chamber, highlighting the escalating threat as they evade light and crew attention. Their presence forces immediate acknowledgment of the invasion's persistence despite the queen's corpse, creating physical danger and psychological tension.

Before: Unnoticed moving along the transom and chamber walls. Their translucent bodies pulse with digestive activity.

After: Detected by the crew upon one larva's sudden presence near the action, prompting urgent realization of continued peril.

View full event