The ocean's salt percentage is 3.5%. Did you know that you can make your own sea salt? here's how!
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To make your own sea salt you will need to: collect some seawater (from as far out as possible), next you will need to boil the seawater, now you will need to leave the water to boil/evaporate. Now, you should be left with pure sea-salt.
Note: There may be sand in the water, so please ensure that you filter out any sand from the salt-water in order to remain safe, and healthy.
This experiment works through a very simple method of evaporation because salt is a solid, and when you boil the seawater the water heats, and the salt is then separated as the water boils off which results in sea salt being left in the pan.