Scuba - self contained underwater breathing apparatus
Self Contained Underwater Breathing Apparatus
So that they may breath underwater.
Scuba Bob's Ocean Quest - 2006 Underwater Heroes Steel Divers 2-6 was released on: USA: 2007
scuba
You can breathe underground by using submersible breathing aparatus similar to scuba gear used by divers.
By oxygen tanks - similar to SCUBA divers.
A SCUBA (self-contained underwater breathing apparatus) tank
they need to know how long they can be underwater, and how deep they can go with the air in the tank.
a divice that supplies air to underwater swimmers
The collective noun is a bubble of scuba divers.
they use an air tank they put a mouth piece in there mouth and breath through it i know this because i went diving before oh and one last thing you have to keep an eye on how much air you have