Deep Diver's Lungs

Deep Diver's Lungs is a Duplicant trait that grants an unusually long ability to hold one’s breath. Duplicants with this trait can remain submerged or without breathable air for much longer periods than average, allowing them to perform tasks in liquid environments or in areas with low oxygen without immediately requiring an external air source. The trait manifests as a physiological advantage for breath-holding rather than an immunization to other hazards; it specifically affects how long a Duplicant can go without breathing.

Deep Diver's Lungs is valuable when working with water, polluted water, or other liquids that would normally force a Duplicant to surface quickly. It reduces interruptions to jobs that require entering or passing through liquid tiles and decreases the immediate need to provide diving apparatus or constant oxygen access for short or intermittent submersions. The trait does not remove the need for safe planning around prolonged immersion, nor does it replace the benefits of proper life support or diving equipment for extended operations.

• Use Deep Diver's Lungs when assigning duplicants to tasks that involve temporary immersion, such as plumbing repairs, liquid transport maintenance, or exploration of flooded areas.
• Combine this trait with other complementary skills or equipment to extend operational time underwater; it functions best as one part of a broader strategy for liquid management.
• Do not rely solely on breath-holding for long-term survival in oxygen-deprived environments; provide oxygen supplies, evacuation routes, or dedicated diving systems for sustained work below the surface.
• Monitor duplicant stress and health when repeatedly exposing them to immersion tasks, since the trait only affects breath-holding and does not confer resistance to toxins, cold, pressure, or other environmental hazards.

Deep Diver's Lungs is primarily a convenience and efficiency trait for scenarios that involve intermittent or short-duration submersion. It enables smoother operations in watery sections of a base and reduces the frequency of task interruptions due to drowning risk, while still requiring standard safety measures for any prolonged underwater activity.