Seas have internal waves

Internal Waves

Internal waves are gravity waves that oscillate within a fluid medium, rather than on its surface. To exist, the fluid must be stratified: the density must decrease continuously or discontinuously with depth/height due to changes, for example, in temperature and/or salinity. Wikipedia, Internal Wave, 2018
The internal waves travel more slowly than surface waves of similar amplitude because the difference in density between two water masses is much less than it is between air and water. The internal waves typically have wavelengths from hundreds of meters to tens of kilometers and have periods from several minutes to several hours. Internal waves are trapped in the pycnocline of stratified oceans.
Journal of Coastal Research, Remote sensing of ocean internal waves: an overview. KLEMAS, V., 2012. 28(3), 540-546. West Palm Beach (Florida), ISSN 0749-0208. .

It is easier for internal waves to travel between layers of different densities at the pycnocline. In open oceans this is much deeper than the photic zone. This means that those waves travel in complete darkness. The Quran talked about those internal waves long before it was discovered:

[Quran 24.40] 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!

"Waves topped by waves, topped by clouds" are internal waves, surface waves then clouds. In deep oceans you cannot see your hand because there is no light down there. So in deep oceans those internal waves travel in darkness. No mistakes in the Quran.

How could an illiterate man who lived 1400 years ago have known that seas have internal waves? How could he have known that they travel in darkness?  

Miracles Of Quran

The Quran (Koran, the book of Islam) contains scientific knowledge that could not have been known 1400 years ago. It ranges from basic arithmetics to the most advanced topics in astrophysics. You are invited to go through those miracles and judge for yourself.

STUDY OF THE EARTH

Geology

Coal, Landslide, Weathering - Erosion, Porous Rocks, Mass Extinction, Steam Explosions, Mountains, Internal Waves, Earth, Pumice, Photic Zone, Tectonics, Dead Sea, Sinkhole, Volcano, Shorelines, Minerals, Hydrothermal Vents, Freshwater, Fire Whirl, Rocks Crack, Subduction, Fault Lines, Earthquake, Soil Expansion, Flash Flood.

SCIENCE OF LIVING ORGANISMS

Biology

Fetal Development, Honey, Cholesterol, Meiosis, Antioxidants, Fats, Hypoxia, Miscarriage, Gardens, Photosynthesis, White Hair, Pollination, Lightning Strike, Inner Ear, Cataracts, Vision, Bones, Milk, Brain Functions, Evolution, Honey Bees, Human Senses, Frost, Gender, Eye Pupil, Womb, Fingerprints, Skin Nerves, Fasting, Breastfeeding, Eardrum, Fetus, Fluorescence, Human Embryo, Bedsores, Perspiration, Bacteria, Plant Stress.

SCIENCE OF Quantity, SPACE, AND CHANGE

Mathematics

Distance, Prime Numbers, Pi, Arithmetics, Relational Algebra, Base-19.

study of the past

History

Paper Money, Hieroglyphs, Digital Books, Calendar, Moses, Pharaoh's Mummy, Haman, Karnak Temple, Pharaoh, Flight, Noah, Dead Sea, Pompeii, North, Petra, Water Dam.

ANIMAL SCIENCE

Zoology

Raptors, Spider Web, Ants, Honey Bees, Colonies, Animal Languages, Mosquito, Crow, Nocturnal Animals, Housefly.

STUDY OF THE ATMOSPHERE

Meteorology

Sea Breeze, Orographic Effect, Wind, Volcanic Gases, Mass Extinction, Microburst, Cloud Seeding Dew, Shorelines, Fire Whirl, Freshwater, Atmospheric Pressure, Flash Flood, Weight Of Clouds.

SCIENCE OF CELESTIAL OBJECTS

Astronomy

Sunlight, Full Moon, Meteorites, Exoplanets, Planetary Orbits, Magnetosphere, Moonlight, Day, Multi-Star System, Iron, Starlight.

SCIENCE OF ELEMENTS AND COMPOUNDS

Chemistry

Viscosity, Superionic Water, Photosynthesis, Volcanic Gases, Mass Extinction, Bones, Steam Explosions, Internal Waves, Pyramids, Hydrogen, Water Stratification, Cloud Seeding, Fluorescence, Pompeii, Rust.

SCIENCE OF MOTION AND BEHAVIOR THROUGH SPACE AND TIME

Physics

Work, Light, Atoms, Pairs, Speed Of Light, String Theory, Rayleigh Scattering, Terminal Velocity, Time Relative, Wormholes, Pulsars, Gravity, Spacetime, Armor Peircing, Gravitational Waves, Sonic Weapons, Mass, String Theory, Equivalence Principle, Red Shifting.

SCIENCE OF THE ORIGIN AND EVOLUTION OF THE UNIVERSE

Cosmology

Shape Of Universe, Age Of Universe, Seven Heavens, Big Bang, Expanding Universe, Sound Waves, Isotropy, Primordial Smoke, Dark Energy, Galaxy Filaments. Dark Energy

Please link to

miracles-of-quran.com