Question

Why is it easier to swim in sea water than in river water?

Answer 1

Hello mate,

Here is your answer,

The salts dissolved in sea water make it more dense than fresh water. This means you float higher, making it easier to swim.

HOPE THIS HELPS UU :)

AND STAY BLESSED.

Answer 2

Answer:Sea water is saline. It contains salt whereas it is not so in well or a lake water.  

Due to salt dissolved in water density of sea water is more so swimmer will not sink. Hence, it is easier to swim in the sea than in a well or a lake.