Because it has air in it. Air weighs less than water therefore air floats.
By Its Buoyance.
prone float, supine float,
jack hammer float
Float...
Swimming floats can be bought places like Walmart, Target, Amazon, Toys R Us and the like. Another place to find a swimming float is through a pool store.
No they do not float they sink right to the bottom so if I was you I wouldn't use them to go swimming with.
It is when you float face down without any movement of the arms or legs.
A cork has a low density. It is lower then water. That causes it to float.
floaty float
Yes
A supine float is floating in the water on your back with head above water.
You float face down in the water. You only move to get air.