Marine

There are 3 different zones in the ocean.
They are Euphotic, Bathyal, Abyssal. The Bathyal zone some sun light.
The Euphotic zone which gives sun light and thats where plankton live.
Then at theres the Abyssal zone that has no light all but theres still life there.
One animal that lives there is the angler fish because that fish has a light to help see and catch its prey.