Question

describe the salinity of the oceanic water

Answer 1

The commonest way to record salinity is to measure the amount of salt in 1,000 g of water, so it is referred to as 'parts per thousand' or ppt. Most of the ocean has a salinity of between 34 ppt and 36 ppt. Some properties of water are changed by having salt in it: Salt makes seawater more dense than freshwater.

Answer 2

Seawater is water from a sea or ocean.

On average, seawater in the world's oceans has a salinity of approximately 3.5%, or 35 parts per thousand.

This means that for every 1 litre (1000 mL) of seawater there are 35 grams of salts (mostly, but not entirely, sodium chloride) dissolved in it.

Although a vast majority of seawater is found in oceans with salinity around 3.5%, seawater is not uniformly saline throughout the world.