How much sunlight does the twilight zone get? none at all almost as much as the sunlight zone a lot in the summer but none in the winter the small amount that penetrates the sunlight zone

The area between 200 and 1,000 meters (656 and 3,280 feet) is the mesopelagic or “twilight” zone.

Explanation:

Light intensity in this zone is severely reduced with increasing depth, so light penetration is minimal. About 20 percent of primary production from the surface falls down to the mesopelagic zone.

there are so many examples for that in different areas, like biology experiment carried out in our lab recently.

here's one link: