Question

Why it is easy to swim in river water than in sea water?​

Answer 1

Answer:

because sea has waves but river hasn't

Answer 2

Answer:

sea water is density and contained salt which increases the density of water and also increases its upthrust so the body sink less in it and we can easily swim in it as compared to the river

water because river water is less denser

I suppose it's easier in seawater but if it isn't right the answer given by someone above is right.