Check out Kirhoffer's best challenges ever list (in chronological order, by season) and all the insider intel that comes with it. But first, a message from the man about his selections and the team ...

The UK’s Astute-class HMS Anson nuclear submarine has arrived at Perth's Stirling naval base for deep maintenance service under AUKUS.

From encounters with unusual sea creatures to dramatic life-saving rescues, people share the wildest things they've seen at ...

What does it take to dramatically extend your breath underwater? In this challenge, I push my limits to see how long I can really go without air. With focus, technique, and training, the results feel ...

From clownfish to a California newt, here are some of the images to make the cut in the Underwater Photographer of the Year contest – including the stunningly cute overall winner ...