Collection: Deep Waters

Recent studies have demonstrated that Visible light cannot penetrate deep waters. In deep waters, it is very dark as little to no sunlight penetrates the water, and the deeper you go, the darker it gets.

Here's what Quran says 1400 years ago:

Surah: An-Nur
Verse: 40

٤٠ أَوْ كَظُلُمَاتٍ فِي بَحْرٍ لُجِّيٍّ يَغْشَاهُ مَوْجٌ مِنْ فَوْقِهِ مَوْجٌ مِنْ فَوْقِهِ سَحَابٌ ۚ ظُلُمَاتٌ بَعْضُهَا فَوْقَ بَعْضٍ إِذَا أَخْرَجَ يَدَهُ لَمْ يَكَدْ يَرَاهَا ۗ وَمَنْ لَمْ يَجْعَلِ اللَّهُ لَهُ نُورًا فَمَا لَهُ مِنْ نُورٍ

Or like the depths of darkness in a vast deep ocean, overwhelmed with waves topped by waves, topped by clouds: depths of darkness, one above another: if a man stretches out his hand, he will not see it! If Allah does not give light to a person he will not have light!

The Quran says that it is so dark down there you cannot see your own hand.

Bear in mind, a person could not have entered deep oceans around the time the Quran was revealed (1400 years ago)