Gorgeous underwater sand dunes (or how Earth never ceases to amaze me)

The underwater world is a strange and haunting one. This NASA Earth Observatory photograph captures the ethereal beauty of underwater sand dunes in the Bahamas. Tides and ocean currents shape the underwater sand much like wind on land, but the result is just different enough to be otherworldly. » 1/17/14 9:33pm 1/17/14 9:33pm

The dramatic rescue of a survivor trapped three days in a sunken ship

Here's a dramatic story with a happy ending to start up the week: this newly released video shows the rescue of a survivor trapped for three days in an air pocket inside a sunken ship. The moment of the encounter with a diver sent to bring dead bodies to the surface is incredible—and so is the rescue itself. » 12/02/13 8:52pm 12/02/13 8:52pm

Watch Guns with Different Types of Ammo Get Shot Underwater in Slow-Mo

By now we all should know the epic water bubble beauty that happens when you shoot a gun underwater. From your typical Glock to AK-47s, the bullet-chasing, self-collapsing water bubble looks more like the gun is shooting mini-nuclear explosions than your typical bullets. But does different types of ammo change the look … » 8/06/13 8:00pm 8/06/13 8:00pm

An Underwater Bullet In Super Slo-Mo Is Breathtakingly Beautiful

You may remember our friend Destin at Smarter Every Day shooting an AK-47 underwater. It was a cool experiment, but the pressure caused the aquarium to shatter, ruining what we now know would have been an amazing shot. To solve this problem, he built a sort of reverse-periscope for a Phantom camera and shot the AK-47… » 7/23/13 2:37am 7/23/13 2:37am

Listen To Music Through Your Cheekbones While You Swim Laps

It's hard to listen to music while you're swimming because even waterproof earbuds that actually stay on try to conduct sound through air to reach your eardrums, and there's not a lot of air underwater. The FINIS Neptune works on this issue by sending sound waves straight into your face. Total bombardment. In a good… » 5/26/13 3:52pm 5/26/13 3:52pm

How NASA Uses the Ocean to Train Astronauts for its Most Dangerous…

» 7/19/12 11:00am 7/19/12 11:00am

The astronauts are wearing white suits with American flags and mission patches on them. They're aware but unworried about the hostile environment inches away from their noses. They'd be dead in seconds if it were not for their air supply. As they bound nimbly along in a state of near-weightlessness, all each… » 7/19/12 11:00am 7/19/12 11:00am

There Is No Such Thing as Normal When You Live at the Bottom of the Sea

The Aquanauts had killed the power and strapped on their emergency air masks. Someone smelled burning. In a rich-oxygen environment like Aquarius, fires can spread with ferocity; any hint of combustion is taken with utter seriousness. The air wasn't circulating as it was supposed to, and, up above, the life support… » 7/18/12 5:00pm 7/18/12 5:00pm

Underwater iPhone Case Only Lets You Use the Camera App

It might be waterproof to 100 feet, but TAT7's iPhone Scuba Case only includes three strategically-placed mechanical buttons for launching and operating the default camera app. So updating your Facebook profile from Davy Jones' locker isn't going to happen. » 3/29/12 1:20pm 3/29/12 1:20pm

Sony's Underwater Cybershot TX200V Is the iPhone's Fat Photo-Taking…

Sony's new glass-faced TX200V is a decidedly opulent stab at something we've been asking for around here: a waterproof camera that doesn't sacrifice optics and design. It's just that it does it at a pretty painful price point. » 1/30/12 11:25am 1/30/12 11:25am