From underwater crop circles to the Bermuda Triangle, these deep sea mysteries actually have pretty logical explanations.

Giant squids can be over 40 feet long, but Humboldt squids are even more fascinating. Learn how these deep-sea creatures ...

For deep reef divers, descending into the ocean’s mesophotic layer can feel like exploring the moon. Discovering never-before-seen marine species is part of the mission. The deep diving team heads ...

The ocean is one of the most mysterious places on the planet. It's full of strange creatures that we don't understand and plenty of things that we haven't even seen yet. But if you're interested in ...

Only a scattering of light penetrates the deep water, more than 300 feet beneath the ocean surface off the coast of Guam. It’s like twilight to the human eye, even in the middle of the day. This part ...

Researchers have uncovered surprising evidence that the deep ocean’s carbon-fixing engine works very differently than long assumed. While ammonia-oxidizing archaea were thought to dominate carbon ...

For decades, scientists believed they understood how material moves deep inside the Earth. The basic theory seemed simple enough. Tectonic plates slowly shift across the planet, some slide beneath ...