West Greenland is where letters to Santa wind up every year, but it's not in some workshop where you'll find the magic. The real gifts are below the water's surface.

Every year, spawning salmon return to the same spot in Alaska as a part of their final act—here's what happens

On a recent expedition aboard the National Geographic Endurance, one diver explores the lush biodiversity in the Falkland Islands' surrounding waters.

On an expedition to South America, one diver experiences a rare encounter with a brand-new species of comb jelly—the pinnate winged comb jelly.

Despite their frigid water temps, North America's fjords are hotbeds of sea life. Get a taste of the myriad creatures you might encounter when diving Cross and Desolation Sounds.

Patrick Webster chronicles his coldwater adventures onboard Linblad Expeditions, highlighting the fascinating and colorful jellyfish found among polar kelp forests.

Producers of some of the world’s most potent toxins, ribbon worms are incredibly adept—if underappreciated—hunters. While they pose no threat to humans, their encounters with other sea creatures are the stuff of nightmares.

Within coral reefs exists an intimate marriage between land and sea. Learn more about how these reef ecosystems have shaped our planet—and why it’s important to protect them.

Seabirds are adept divers. They just do things a bit differently than we do, since their “dive equipment” is built-in. Here’s what it’s like when these pelagic birds take the plunge.