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Which ocean is the saltiest?
Of the world’s five ocean basins — Pacific, Atlantic, Indian, Southern and Arctic — the Atlantic has the highest salinity, says the National Weather Service. This is because salinity decreases near the equator and at both poles.

The salinity of an ocean varies in different areas. Heavy rainfall in the tropics near the equator decreases the salinity as the fresh water falls into the salty ocean.
The Red Sea has the saltiest ocean water, according to the National Weather Service, with a salinity level of about 40%, due to the region’s high evaporation rate.

Is swallowing salt water from the ocean bad for you?
In large quantities, yes. Accidentally swallowing a small amount of seawater during a swim won’t make too much of an impact. Still, NOAA warns humans aren’t meant to drink salt water. The salt content in the ocean is much higher than what the human body can process, and there can be deadly consequences if overconsumed.