Learn to Scuba Dive

If you vomit while scuba diving, keep your regulator in and vomit through the regulator exhaust vents. Unless you are vomiting huge chunks of food, it should flow out the exhaust vents without a problem.

A scuba diving negative entry means you enter the water negatively buoyant, so you have no air in your BCD to allow a fast descent. Negative buoyant entries are often done as a backward roll from a RIB or Zodiac, but can be done using any entry technique including a stride entry from a hard boat.

You should rinse the inside of your buoyancy control device to remove saltwater or chlorine depending on your most recent diving activity, to clean out any sediments and to prevent bacterial growth. Proper maintenance of your BCD by regularly rinsing the inside with water will help your BCD last.

If you sneeze while scuba diving this could disrupt your mask and create water leaks, or you could dislodge your regulator at the same time as momentarily affecting your buoyancy. During the sneeze you should hold on to your mask and regulator to minimise the affect of the sneeze while scuba diving.

You will not be able to sink when scuba diving if you cannot control your buoyancy control and if you don’t release air from your buoyancy control device, or if you have insufficient weight or the weight is incorrectly distributed and if you have equipment issues will also prevent you from sinking.

You should not scuba dive with high blood pressure, which is considered high if it’s above 160/100 by Divers Alert Network, or exceeds 140/90 by the Diving Medical Advisory Committee and the American Heart Association. Consult a medical professional if you are concerned about your blood pressure.

The hardest things about scuba diving include buoyancy control, equalisation of the ears on descent, equipment management and psychological factors, as diving can be an intense experience for some and some beginners panic. Scuba diving can also be physical and require a certain level of stamina too.

Scuba diving can potentially pose some challenges for individuals with pre-existing heart conditions or certain risk factors. The physiological effects of scuba diving, such as increased pressure, gas absorption, and changes in heart rate, can put stress on the cardiovascular system.

The 3 main dangers of diving are decompression sickness (DCS) as a result of ascending too fast, barotrauma caused by pressure changes and by divers holding their breath when ascending, plus nitrogen narcosis which affects divers on deep dives where judgement can be impaired or divers get confused.