I have seen this in tv. Some divers were underwater for about 3 minutes. I think it takes a life to achieve that.
By oxygen tanks - similar to SCUBA divers.
Divers carry with them tanks containing air in them. The air present in these tanks has different composition from the normal air. It has 32% oxygen, 56% Nitrogen and 12% Helium. It is done so as to avoid creation of bends inside the body of divers when they come out of water.
Divers carry with them tanks containing air in them. The air present in these tanks has different composition from the normal air. It has 32% oxygen, 56% Nitrogen and 12% Helium. It is done so as to avoid creation of bends inside the body of divers when they come out of water.
By Carbon; The reason we use Canister Tanks underwater.
Some advanced divers dive using gas mixtures including Helium.
Because fish have gills and can breathe under water and humans do not
Divers wear tanks full of oxygen to help them breathe while they are under water. When the tanks start to get empty, they resurface.
It definitely would. Also, a tank filled with non-compressed air would be nearly impossible to use because air wouldn't flow out of it without an enormous amount of effort. For these reasons, all tanks used by divers are filled with compressed air.
I pretty shore you can, if everyone has snorkles, suits, and just in case, a few air tanks.
No. Only fish can. No other animals have gills or means of breathing underwater. Well, except those who have oxygen tanks that is. THEN you can breathe underwater.
Air is a mixture of gases in which helium is present in atmosphere.It is mostly present in oxygen tanks used by sea divers and in balloons.
As far as I know there are no underwater labs. There are aquariums that have created tanks for the study of species, and dive into ocean areas to study life using research ships ( Ballard is a good example of this), but non have built a complex underwater.