This layer extends to about 200 meters deep, where you’ll find the beginning of the twilight (dysphotic) zone. Here, sunlight decreases ... ll first encounter the midnight (bathypelagic) zone ...

The researchers studied tissue from over 120 fish. They found that 50 to 60 percent of their diet came from ocean’s twilight ...

Picture an ocean world so deep and dark it feels like another planet—where creatures glow and life survives under crushing ...