Immersion in water and exposure to cold water and high pressure have physiological effects on the diver which limit the … See more

There are several modes of diving distinguished largely by the breathing gas supply system used, and whether the diver is exposed to the ambient pressure. The diving equipment, support equipment and procedures are … See more

People may dive for various reasons, both personal and professional. While a newly qualified recreational diver may dive purely for the experience of diving, most divers have some additional reason for being underwater. … See more

Freediving as a widespread means of hunting and gathering, both for food and other valuable resources such as pearls and coral, dates from before 4500 BCE. By classical Greek and Roman times commercial diving applications … See more