In fact...
In fact, He is the One Who balances the objects’ exhausted energy in various ways; compensating the sun’s exhausted energy is but one sign of Allah’s Invincibility. Compensation of Caspian Sea Tide The Caspian Sea is about 27.6 meters beneath the sea level and it still continues to go further down. The Caspian Sea is not related to the free seas so its tide is not in concurrence with the oceans’ general ebb and flow.
Due to its small size, this sea cannot use the gravity of the moon and so technically it shouldn’t have had a tide. As a result the sea should have rot long ago, polluting its shores, and losing any living things in and on it. But why did it not happen? The Omnipotent Who created the sea very well knew how compensate this shortcoming. He sent winds called “Sarnuk”, “Khazari”, and “Miyanwa”[^1] that creates waves in the sea to such an extent that the rivers pouring into it have tides too.
These winds blow so powerfully that most fishermen cannot even control their boats against them. Another duty of the mentioned winds is that they drive the clouds from the north to the south of the sea and produce rain in the northern shores of Iran, providing the meadows in this region a garden of flowers. The winds also send the seawater into “Anzali marsh” to filter it. Due to constant flood-like rain, the rivers in Gilan[^2] are usually muddy and full of seeds and roots from the woods.
The mud of the rivers pouring into the marsh thickens the bottom layer, allowing the seeds and roots, too, to grow inside the marsh. These two factors are sufficient to dry the water in the marsh and turn it into a swamp. Thus, what is the reason that this marsh has existed for hundreds of years now? To avoid this, the Almighty sends the seawater to the floods.
At the same time as the above-mentioned winds send the clouds from the north of the sea to the south, the fresh seawater flows to the muddy river water and mixes with it, making it less dense and removing any seeds and roots by its salt. When these winds stop, Allah sends other winds called “Keramwa”, “Kenarowa” and “Aftab Bushu” to reverse the water flow, pouring the marsh water into the Caspian Sea, and hence evacuating the marsh from muddy waters.