Underwater Diving

• Swimming underwater
The ability to dive and swim underwater can be a useful emergency skill, and is an important part of watersport and navy safety training. More generally, entering water from a height is an enjoyable leisure activity, as is underwater swimming with or without breathing apparatus.
• Snorkeling
The addition of a short breathing tube (snorkel) allows the diver to breathe while remaining immersed, but close to the surface.