The science of underwater swimming: how staying submerged gives Olympians the winning edge

Learning with Lyrics! on Instagram: "Why is it so easy for submarines to move up and down underwater? 🤔 Submarines can move up and down underwater by changing their buoyancy using ballast tanks and controlling their depth with diving planes. To dive, they flood ballast tanks with water to become denser than the water, and to surface, they use compressed air to push water out, making them lighter! #science #physics"

Underwater Creatures and Their Unique Habitats