Why would forcing a crayfish to lay on its back lead to death?

Forcing a crayfish to lay on its back can lead to death primarily due to respiratory distress. Crayfish breathe through gills, which need to remain moist and properly positioned to extract oxygen from water. When flipped onto their backs, they may be unable to access water, leading to asphyxiation. Additionally, the stress and inability to right themselves can cause further physiological strain, potentially resulting in death.