People simply held their breath, of course the people that did dive while holding their breath are good at it, and could do it for several minutes.
Underwater!
Aqualung was the original name for SCUBA, self-contained underwater breathing apparatus.
Scuba gear can be used under water. This can be in oceans, lakes, rivers and even swimming pools. Scuba gear is used to dive on sunken ships, or to search for survivors and/or bodies in water involved crash sites. It is used to dive on coral reef in marine biology research.
Different scuba gear types weigh different amounts. The oxygen tank is the heavy part of the scuba diving gear.
Scuba was invented by the navy.
Scuba gear
Scuba gear
I did not myself, but friends of mine did. SCUBA equipment had been around for many years, and was used by Navy personnel from time to time.
Many scuba stores sell scuba diving cameras. Check a scuba gear stores in your area. This will allow you to compare cameras and get advise from fellow scuba divers.
A scuba compressor can be found at Leisure Pro, Amazon, or Best Scuba Gear. If you need to save money and don't mind purchasing used equipment, Craigslist and Kijiji regularly have compressors available.
You can breathe underground by using submersible breathing aparatus similar to scuba gear used by divers.
yes