Think you know your dive physics from your physiology? Test your understanding of the science behind every breath, bubble and bar of pressure underwater. Good luck!

‘Shark-infested water!’ hollers Captain Jason Flowers, his head popping up momentarily from the surface. I grab my camera and giant stride off the boat into the black ocean below. I don’t want to miss ...

The 12th-century Persian poet Rumi wrote that ‘Silence is an ocean’. It’s easy to see why people think of the underwater world as a place of profound quiet. As divers, though, we know different. So ...