Anoxic and hypoxic zones, sometimes called dead zones, are bits of the ocean where oxygen is so scarce that fish cannot survive, according to NOAA. If breathing underwater is such hard work ...

An underwater species that was once ... The team used equipment like rebreathers and trimix breathing gases to reach depths of over 410 feet, according to the paper. Researchers encountered the fish ...

Here they practice the little known sport of underwater ice fishing. They fish completely submerged, breathing through air tanks, covered in thermal wear. Please do not look at what I've written ...

Last November, 32-year-old Nicholas Mevoli lay on his back on the ocean surface, gulping air like a fish ... single breath of air. It would end in disaster. How long can someone stay underwater ...

Tightening the window further, Hara hunts on a single-held breath. This gives her ... I started seeing a different world underwater, and I suddenly saw more fish, and I even used my muscles ...

fish need oxygen to survive, so how do they breathe underwater? Oxygen helps release the energy that drives our bodies from sugary chemical glucose in a process called breathing. Breathing ...