Manatees are incredibly intelligent marine mammals who show long-term memory and associative learning skills on par with dolphins. They are thought to have inspired the myth of the mermaid. (In 1493, ...

Virtually nothing has been known about leatherback turtle diving strategies, but now scientists have discovered that leatherbacks regulate their buoyancy by varying the amount of air they inhale ...

Explaining how a boat like La Salle's La Belle sinks is not all that difficult: The space within the boat fills up with water, either through the hull or over the boat's sides, causing the boat to ...

Introduction Have you ever thought about why most fishes never sink to the bottom of the ocean or float to the water’s surface? How is it that they can stay so perfectly buoyant underwater? You might ...

Ah, the stately hot air balloon. Not really useful for all that much except for having a grand old time floating around the skies, it's still a marvel of simple physics. Fill a giant balloon with air.