AOWD CHAPTER 1.10. MOVEMENT

A diver’s mass is not always constant. It can increase or decrease based on certain movements, the amount gas in the BCD and lung volume. Therefore, it is important for a diver to learn and optimize correct movements based on these changing conditions. Hands and arms...

AOWD CHAPTER 1.09. NEUTRAL BUOYANCY

Ideally, neutral buoyancy should be maintained throughout the entire dive. This will help you maintain good trim and avoid unintended contact with the bottom or reef. Neutral buoyancy is achieved by balancing all of the elements of the buoyancy equation: the BCD,...

AOWD CHAPTER 1.08. IDEAL BUOYANCY

Being suspended in mid-water with neutral buoyancy can be compared to being in a helicopter hovering in the sky. It’s the ideal position to observe the splendor of the surroundings. Having the ability to control our position — through ideal buoyancy, allows us to...

AOWD CHAPTER 1.07. BUOYANCY CONTROL

Successfully achieving and maintaining buoyancy control is a technique that divers must consciously visualize and actively practice. The previous paragraphs have discussed many of the behaviors necessary to achieve proper buoyancy; however, in order to improve, a...

AOWD CHAPTER 1.06. UNDERWATER NOISE

“The Silent World”. This was the title of Jacques-Yves Cousteau’s first underwater feature film in 1956. However, contrary to this, the underwater world is teaming with noise; more precisely, acoustic waves that sea life recognize, and what we call sound when the...