Masters of disguise, the leafy sea dragon is one of the trickier ocean critters to spot. Here's why these mythical-looking animals dazzle us—and how to take the perfect photo.

The Taam Ja’ blue hole, a massive underwater chasm in Chetumal Bay on the eastern coast of Mexico’s Yucatán Peninsula, has just been identified as the deepest blue hole in the world. Previously ...

Known as a top predator in the deep sea, this fish has evolved incredible adaptations to survive in underwater areas that have never known so much as a glimpse of sunlight. Dragonfish are found ...

Sea dragons are some of the most ornately camouflaged creatures on the planet. Adorned with gossamer, leaf-shaped appendages over their entire bodies, they are perfectly outfitted to blend in with ...