What is the dysphotic zone?
The dysphotic zone is also known as the twilight zone; it is found below the euphotic zone. It reaches down to about 3,000 feet. Some sunlight reaches this zone, but not enough for photosynthesis to occur. Plants cannot survive in this zone, and many of the animals have large eyes to see better. Animals like octopus and hatchet fish live there. There is one more zone below the dysphotic zone - it is called the aphotic or midnight zone. No sunlight reaches this last zone. Some of the animals in these two zones create their own light using bioluminescence.
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