Take a deep dive into the ocean’s secrets. ExtremeTech reveals its hidden layers and life forms. Discover the depths of our ...

There’s nothing quite like the feeling of slipping beneath the waves and entering a world of vibrant corals, curious sea creatures, and the gentle sway of the ocean. As a certified diver with over a ...

Marine mammals can hold their breath for extended periods underwater; the question is, how do they know when it's time to resurface?

Scientists at the University of St. Andrews found that seals can detect blood oxygen levels, allowing them to plan dives and ...

The best dive watches combine old-school style and genuine underwater usability. Here are our top picks from Rolex, Tudor and ...

For years, scientists felt like the fish they were watching watched them back. A new study suggests they can recognize a ...