Researchers retrieved reef monitoring devices that had been placed in deep coral reefs in Guam. The devices were placed up to 330 feet below the surface.

Scientists on California’s Central Coast recently spotted a giant, evasive seven-arm octopus while on a research expedition in Monterey Bay. The rare creature, called Haliphron atlanticus, was seen by ...

At the bottom of the world’s trenches, there’s a fish that shouldn’t exist. Here’s how it earned the title of the ...

Diver John Roney shared mesmerizing video footage from his last dive — a close-up of the world's largest lion's mane jellyfish.