Silence

Under water... can't breathe... you try to scream, try to swim, try to get something, anything to get out of the sea... But you forget - evolution says you once came out of here, if evolution is as a result of desperate intent to survive, then evolution can be summoned at will - there is a desperate need to survive, the most desperate occurs when drowning - as everything in your body becomes intelligent enough to find a means to survive - your brain shutdown your lungs so the air doesn't carry water in and drowns it - everything in you wants to live.
In that moment of struggle, take the most unexpected step - silence! the struggle only delays the inevitable, so you pray and hope that if evolution is kind - she will return to you what you once lost.

Hush now, the dead don't speak.

Source: https://satosanteru.deviantart.com/art/Drowning-425335157