Allowing it to sit for about 15 to 30 minutes, then rinsing it off until it has lost its saltiness. Then cook it. Shrimp soaked in salt has a sweet succulent flavor that is much better than the way most of us eat them. Salt draws out the old dead blood, and unclean parts of the shrimp and leaves it clean. When it is rinsed and cooked the flavor is unbelieveablely different from Shrimp cooked other wise.
Salt is a preservative.
Our ancestors used salt to cure food to be used later. Country Ham, Corned Ham, Beef Jerky, and salted fish were staples of their diets. Salt has healing properties. It kills most germs on contact. It burns when it hits a raw spot, but is very effective in cleansing a wound so it can heal.