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A person speaks above water, then dips below the surface and continues speaking. The voice becomes heavily distorted and bubbly underwater.

C3-1-04 Environment Transition · propagation_medium principle: Liquid as Medium (Fluid)
Seedance 2.0ByteDance · proprietary
Kling 3.0 OmniKuaishou · proprietary
Veo 3.1Google · proprietary
LTX-2.3Lightricks · open
Ovi 1.1character.ai · open
JavisDiT++JavisDiT · open
MagiHumanGAIR-NLP · open
Per-prompt rubric

Basic standards

Visual presence

  • a person
  • water

Event: a person speaks above and below a water surface

Audio presence

  • a person

Sound: human speech

Key standards

Visual physical commonsense (V-PC)

  • A person visibly speaks above water, then submerges fully and continues speaking with visible bubbles appearing during underwater speech.

Audio physical commonsense (A-PC)

  • The speech is clear and undistorted above water.
  • The speech is heavily distorted and bubbly underwater.

Cross-modal physical commonsense (AV-PC)

  • The shift to distorted bubbly speech coincides temporally with the person's head submerging.