Aphotic,Euphotic, Disphotic

This is a viper fish. It lives in the aphotic region of the ocean. This is where there is barely any light.

This is an angel shark. It lives in the euphotic part of the ocean. This is the very top of the ocean wher there is plenty of sunshine.

This is a hatchet fish. They are very shiny. They live in the disphotic or twilight zone. This is the zone between the aphotic and euphotic zones.