The Meeting of the Seas
In Surah Ar-Rahman, it states “He released the two seas, meeting [side by side], Between them is a barrier [so] neither of them transgresses” (Quran, 55:19-20). Science has discovered that in places where two different seas meet, there is a barrier that divides them which helps both the seas maintain their own temperature, salinity, as well as density [R.A. Davis, Principles of Oceanography, ISBN-13: 978-0201014648].