Ships and submarines fight wars above the waves and below, but which of those two is faster? We break down the differences in ...

The Migaloo M5 concept involves a 540-foot base-model submersible superyacht that could keep its wealthy owners underwater ...

PEARL HARBOR, Hawaii - NOAA researchers recently made an unlikely discovery while exploring the wreckage of the USS Nevada.

Ships and subs at sea are surrounded by billions of gallons of water, all of it undrinkable because of its high salt content.

Finding and disposing of underwater mines on the sea floor is one of the US Navy's hardest and most dangerous tasks. Robots ...

NBC News joined a NATO flotilla as it sailed the icy sea hunting Russian saboteurs accused of targeting undersea cables.

Therefore, finding ways to receive instructions from surface bases or ships while underwater is essential, making communication equipment crucial. However, most forms of communication, like ...

The group used an underwater sonar to learn that the ship was split into two pieces under water, and utilized an unmanned drone to record the video.

Get to know the "absolutely astonishing" true story behind the new movie "Last Breath," which chronicles a 2012 deep-sea diving accident.

In 1925, Popular Science showcased his next breakthrough—a cylindrical apparatus (seen above) attached to a ship by a cable ... nearby to aid with various underwater missions, such as salvaging.

The Underwater Photographer of the Year is back! The competition spans 13 different categories, pushing photographers from around the world to capture the magic of the underwater world - from ...