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.
Oxygen Tank + mask
Aqualung.
aqualung, snorkle, SCUBA tank
a breathing tank! try it its fun! (underwater swimming)
It's called an aqualung
Divers wear tanks full of oxygen to help them breathe while they are under water. When the tanks start to get empty, they resurface.
isn't it a scoober diving kit?
Turtles don't breathe under water. They've got lungs - not gills. They hold their breath when they dive.
They use their gills to breathe under water.
squirres can't breathe under water.
diver deep sea diver dolphin trainer
They do not breathe underwater. They hold their breath under the water and surface to breathe.