| Who wouldn't want to explore the world under the | | | | many things that you need to consider. Staying |
| sea? Mankind has always been fascinated with life | | | | underwater is totally different from living on land. |
| underwater. Because of this great fascination, | | | | For one, humans don't have the gills that can extract |
| extensive researches and amazing inventions have | | | | oxygen from the water. Air pressure is also |
| given us the chance to breathe underwater so we | | | | significantly different from water pressure. The human |
| can observe or simply have fun in dealing with aquatic | | | | body isn't adapted to high pressure changes. |
| animals. | | | | Controlling your buoyancy and avoiding losing body |
| However, breathing underwater isn't just simply bringing | | | | heat when underwater are also major considerations. |
| a tank full of air with you when you dive. There are | | | | |