Quran :the greatest Miracle of Islam
In the name of Allah , most gracious most merciful
Here you will see precise description of the deep ocean darkness ,
which was not known 100 years ago . Confirmed by scientists.
"Or (the Unbelievers' state) Is like the depths of darkness In a vast deep ocean, Overwhelmed with billow Topped by billow, Topped by (dark) clouds: Depths of darkness, one Above another: if a man Stretches out his hand, He can hardly see it! For any to whom ALLAH Giveth not light, There is no light!"
[AL-QUR'AN 21:40]
http://www.nhptv.org/natureworks/nwep6c.htm
From Sunlight to Darkness
The pelagic region is divided into three zones. The top zone is the euphotic or sunlit zone. This is the ocean zone that sunlight penetrates. Because this zone gets sunlight, photosynthesis can occur and plants can grow here. The sunlit zone goes down to about 660 feet. The next zone is the dysphotic or twilight zone. Some sunlight reaches this zone, but not enough for photosynthesis to occur. The dysphotic zone goes down to about 3,300 feet. The last zone is the aphotic or midnight zone. No sunlight reaches this zone and it can reach depths of close to 20,000 feet. Sometimes people divide the midnight zone into two zones: the aphotic zone and the abyss.