“We made from water every living thing.” (Quran 21:30) And He said “O mankind! if ye have a doubt about the Resurrection, (consider) that We created you out of dust, then out of sperm, then out of a leech-like clot, then out of a morsel of flesh, partly formed and partly unformed, in order that We may manifest (our power) to you; and We cause whom We will to rest in the wombs for an appointed term, then do We bring you out as babes, then (foster you) that ye may reach your age of full strength; and some of you are called to die, and some are sent back to the feeblest old age, so that they know nothing after having known (much)” (Quran 22:5)
“Just ask their opinion: are they the more difficult to create, or the (other) beings We have created? Them have We created out of a sticky clay!” (Quran 37:11)
In the preceding verses, Allah has mentioned various stages of human creation. The creation of man according to the Quran was first from water and dust, which when combined became clay. This refers to the creation of humanity’s first ancestor, Adam. Then Allah decreed that his descendants would reproduce after that according to the same natural law that is applied to many other living beings.
Sometimes the Quran refers to semen as “water”, meaning fluid. So when Allah says in the Quran that He created every living thing from water, it can indicate that everything in creation; humans, animals and plants have all been created from water and depend upon water for their continued existence. But a similar verse: And Allah has created every creature from water.10 can also mean that human beings and animals are created from their fathers’ semen or sperm. This is confirmed by other verses, such as: Did We not create you from a liquid disdained?
As for scientific evidence, research has confirmed that the body of man, like that of other living beings, is made up predominantly of water, and that the elements of the human body are exactly the same as those found in the earth’s soil in greater or smaller quantities.