Where do narwhals live in the Twilight Zone?

Answer 1

Narwhals don't live in the twilight or middle zone of the ocean. They instead live in the sunlit, upper zone that tends to be identified as the surface downwards 200 meters/600 feet. Within that zone, they tend to dive 30-300 meters/90-900 feet downwards for prey. But in the winter, narwhals migrate to deeper waters. There, they're known to dive into the middle ocean zone. Indeed, they're recorded as seeking prey as much as 800-1,500 meters/2,400-4,500 feet below the surface. The middle zone tends to be identified as extending 200-1,000 meters/660-3,300 feet below the surface. So narwhals are capable of seeking food even into the deepest, darkest ocean zone.