He has let loose the two seas

In a holy ayah of the Koran God, be He exalted, says: “He has let loose the two seas meeting together, between them is a barrier which none of them can transgress, Then which of the Blessings of your Lord will you both (djinn and men) deny? Out of them both come pearl and coral. Then which of the blessings of your Lord will you both (djinn and men) deny?)” (Sura Ar-Rahman, ayat 19-23)
The holy ayah talks about God’s grace to us that He, be He exalted, mixed the two salty seas, just as we find that there is a barrier between every two salty seas and that this barrier is an area which extends for several kilometers. And God, be He exalted, told us that each of the two seas is salty because pearl and coral come out of them and they are not present except in salty seas.
Thus the ayah talk about a barrier between the two seas, so what do scientific facts and marine scientists say?
Scientific fact: When scientists studied the area of the strait between the Red Sea and the Indian Ocean, they found that there is a separating area between them and this area has specific characteristics, so that each one of the two seas has its own specific characteristics such as temperature, salinity, density and the types of fish that live in it.
So the Red Sea has its own characteristics and the Indian Ocean also has its own characteristics and there is a separating area between them which is the strait’s area where the two seas meet and mix together. But despite the passing of thousands of years, the characteristics of each of the two seas remains this way and this is from God’s graces to us.
A picture that shows the area of the barrier between the Mediterranean Sea and the Atlantic Ocean and this region contributes to the balance of the seas so as to prevent mixing and transgression, therefore God, be He exalted, said, “He has let loose the two seas so that they meet together but between them is a barrier which none of them can transgress, Then which of the Blessings of your Lord will you both (djinn and men) deny?”
The miracle in this ayah is that it talks about a fact in marine science that was not known except recently, namely the strait’s area and that the presence of this area prevents the transgression of one of the seas on the other, therefore God, be He exalted, said, “Then which of the Blessings of your Lord will you both (djinn and men) deny?”
Also no one was aware of this fact at the time of the descending of the Koran. Therefore this ayah is considered to be one of the ayah of the scientific miracles in the holy Koran.