§ This
property of the seas, that they come together yet do not mingle with one another
at all, has only very recently been discovered by oceanographers. Because of
the physical force called "surface tension", the waters of
neighboring seas do not mix. Caused by the difference in the density of their
waters, surface tension prevents them from mingling with one another, just as
if a thin wall were between them. (Davis, Richard A., Jr. 1972, Principles of
Oceanography, Don Mills, Ontario, Addison-Wesley Publishing, s. 92-93.)
§ There
are large waves, strong currents, and tides in the Mediterranean Sea and the
Atlantic Ocean. Mediterranean Sea water enters the Atlantic by Gibraltar. But
their temperature, salinity, and densities do not change, because of the
barrier that separates them.
Mention of the Marine
Barriers in the Quran
§ "He
has let loose the two seas, converging together, with a barrier between them
they do not break through." (Quran, 55:19 - 55:20)
§ It
is He Who has let free the two bodies of flowing water: one palatable and
sweet, and the other salt and bitter; yet has He made a barrier between them, a
partition that is forbidden to be passed (Qur’an, 25:53)
§ Who
has made the earth firm to live in; made rivers in it; set thereon mountains to
stabilize it, and made a separating barrier between the two bodies of flowing
water? Can there be another God besides Allah? Nay, most of them know not
(Qur’an, 27:61)
Related Links
· Mystery
in the Ocean - Quran and Modern Science (4 min YouTube video)
· Why
the Atlantic and Pacific Oceans Don't Mix (9 min YouTube video OR here)
· Fresh
Water Meets Sea Water – Boundary Explained (3 min YouTube video)
· The
Seas Not Mingling With One Another (1 min YouTube
video)
· More
YouTube videos about the subject.