Eli5: Why does sea water kill us but electrolyte solutions actually hydrate us? Aren’t they both water + salts?

Question

Edit: Question answered. Thanks!

Don’t be too hard on me, I almost failed chemistry:'(

In: 2220

Answer 1

Somebody did a study on those stranded at sea where somebody lived. It turned out those who drank seawater were LESS likely to live long enough to be rescued. Don’t drink seawater. Now electrolytes are what plants crave.