[I've heard this question asked as a kind of a twisted riddle, the answer to which is, "A drowning person": When a person is first in the water, they have air in their lungs and will float. As they...
anything can sink or float, it all depends on its shape. usually, buoyancy is a result of an objects density. if an object has a density greater then water (usually 1 g/cc) it'll sink and likewise,...