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How do ships float on water even though they are very heavy

Have you ever wondered how massive ships, weighing thousands of tons, stay afloat on water instead of sinking? The answer lies in a scientific principle called buoyancy, discovered by the ancient ...

Fish use more energy to stay still than previously thought

Many fish appear to hang effortlessly in the water while they wait for prey, defend a nest or pause between bursts of activity. But our research shows that this quiet stillness is anything but ...
IFLScience

The Place On Earth Where It Is "Impossible" To Sink, Or Why You Float More Easily In Salty Water

James is a published author with multiple pop-history and science books to his name. He specializes in history, space, strange science, and anything out of the ordinary.View full profile James is a ...
National Academies of Sciences%2c Engineering%2c and Medicine

Stemming the Tide: Controlling Introductions of Nonindigenous Species by Ships' Ballast Water

A ship or any other freely floating body displaces its own weight of the liquid it is in when afloat. This weight (w) acts downward through the center of gravity of the body (G) and is resisted by an ...