How do you explain the importance of high water content (in%) in living organisms?

The high water content in living organisms indicates its important role in life processes.
The physical properties of water due to the asymmetric structure of its molecule are of great biological importance. Water is a universal solvent and, due to this, a universal medium for biochemical processes in the body, a significant part of organic and inorganic compounds in which is in the state of solutions.
Water on Earth is a unique substance, its availability can only be compared with air.
The next unique property of water is its neutrality in relation to a living organism. Direct contact of water with the body does not result in any damage or violation of the integrity of the body.
Due to its heat capacity, water provides the best conditions for the accumulation and preservation of heat, which is necessary to maintain a stable temperature in the body.

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