It's not easy to capture anything 3,000 feet below the surface of the ocean. That's why it wasn't until now that scientists were finally able to follow the world's largest active predator on a hunt. These scientists follow a sperm whale as it uses echolocation to track down what appears to be a ...

If you can see the sun, you're unlikely to ever see a ghost shark. That's because ghost sharks, or chimaeras, are found so deep underwater that the sun's rays can't penetrate. This particular ghost shark, which is a pointy-nosed blue chimaera, was filmed in 2009 in the North Pacific for the ...

Many people look to the ocean when they're looking to relax and get a little peace and quiet. As soothing as the sea can be, you'd think it would only become calmer the further down you submerged into the depths - you'd be wrong. Audio recordings obtained over 23 straight days in Challenger Deep - ...