“He released the two seas, meeting [side by side]; Between them is a barrier [so] neither of them transgresses.” [Al-Quran 55:19-20]

“From both of them emerge pearl and coral.” [Al-Quran 55:22]

“And it is He who has released [simultaneously] the two seas, one fresh and sweet and one salty and bitter, and He placed between them a barrier and prohibiting partition.” [Al-Quran 25:53]

Video of North sea and Baltic sea

Literally, the word ‘Maraja’ means ‘to let loose’. The word ‘Bahrain’ [two seas or two types of waters] refers to sweet and salty waters. Allah has created two types of waters. In some places the two seas meet together, the samples of which are available in every region of the world. However, where the sweet and salty waters meet, there is a distinct barrier between the sweet and salty waters. In some cases, the two types of waters are seen distinctly in higher or lower position. If the salty water overrides the sweet water, the characteristics of the sweet water will not be spoiled; nor will the characteristics of the salty water be affected in any way if the sweet water overrides it.

Thus the Qur’an states:  “He has set forth the two seas that meet together, while between them there is a barrier they do not transgress.. ..55:20)  and (From both of them come forth the pearl and the coral …. 55:22). The meaning of lu’lu’ is quite well-known, that is, ‘pearl’. The word marjan too is one of the ‘precious jewels or gems’. It is a hard substance formed from coral which has branches like trees. Both of these precious jewels or gems are produced in the waters.

It is generally understood that pearls and corals are both hunted or fished for in the salty waters, not in the fresh waters, whereas the verse states that they are fished for in both kinds of waters. It is possible to reconcile the verse with the general understanding: Pearls as well as corals originate in sweet waters where it is not easy to hunt for or from which to fish out the gems or jewels. The sweet waters flow into the salty waters where the substances are carried and deposited. The pearls and corals are brought out from there. Therefore, the source of the pearls and corals is said to be the salty seas.