text: why do swimmers float better in the ocean than they do in freshwater? i need answers asap!? please help. please give details if so, or even the link to a site with the answer works. thank you! #1.when a body floats it displaces fluid (water here) equal in weight to its own weight.   #2.buoyancy is equal to weight of the fluid displaced  so that we can say for a floating body:  buoyancy = weight of the fluid displaced = weight floating body  #3.sea water density is more  than that of  fresh water,   so a lesser amount of sea water provides the required buoyancy to enable the swimmer float, and less sea water needs to be displaced.   this makes the job of swimmer easier.  [btw: a boiled egg floats easily in salty water for the same reason]