Question

why are we able to swim in water

Answer 1

We are essentially made up of 78% water as it is so water floats about in water so that’s one thing…we’re almost the same density. Next time you’re in the bath or swimming pool and lay on your back and breath all the air out, then breath in hard (make sure your head is above the water!!). You’ll notice you will rise and fall quite markedly. A lung full of air will increase you buoyancy (ability to float) a lot.
As for the swimming bit…water molecules are held together by quite a strong intermolecular force called hydrogen bonding…it’s rather hard to wade or swim because you have to break trillions and trillions of those bonds for every push forward.
I hope that answers your question  ..... hope it is correct

Answer 2

hey!!!!
here is your answer
Swimming relies on the natural/Non natural bouncy of the human body. on average, the body have relative density 0.98 compared water,which caused the body floats. ... higher level of body fats and saltier water both lower the relative density of the body and increase it's bouncy
i think it help you