Kelp populations would be entirely depleted and it would impact the sea life that thrive off of kelp as their homes and source of food. Many sea creatures use kelp as a sort of barrier to prevent bigger fish from attacking them.
Water helps your body maintain your body functions and regulates the temperature of your body and you lose water by doing activities by running, sweating and digesting its important to high drat all the time. Its important and re hydrate and eat food that have water in them like apples is an example.