GlossaryTwilight Zone
The middle zone of the ocean which reaches down from 656 feet to 3,280 feet. This zone has very little sunlight, no plants, and few animals.
The Twilight Zone is a very dim place where the water is much cooler.
Image: https://pixabay.com/static/uploads/photo/2012/02/29/11/57/animal-18719_960_720.jpg