The 5 sharks most dangerous to divers

The three most dangerous sharks are the Great White, the Tiger and the Bull. The next most dangerous are the Gray Reef and the Silky, although...

Diving medicine: age limitations for divers

People of all ages can engaged in sport diving. To ensure safety, however, the elderly and young people are advised to consider factors such as...

Can you scuba dive with epilepsy?

Physicians are asked from time to time whether patients who have epilepsy should dive. It is my view that they should not and this...

Have your lobster and eat it too

Lobsters and crabs are beautiful and complex creatures. If you ever catch a really nice one, you may be undecided between cooking it and having it mounted....

Scuba diving and dizziness

Dizziness that occurs while diving can be dangerous. Some divers felt they were going to blackout, while others had brief periods of disorientation. Either...

Women and diving

Physiological conditions that affect women divers are discussed. Among these are physical fitness, temperature adaptation, menstruation and pregnancy. Studies that clarify these issues are cited and...

Collapsed lungs and prohibitions to diving

Diving with a spontaneous pneumothorax is not recommended. First aid is needed to evacuate air if a lung collapses while diving, for which most divers and...

Several tips in photographing shipwrecks

Opportunities for shooting shipwrecks and other sunken, man-made objects are increasing for two reasons: More underwater videographers are traveling to locations that feature wrecks...

Using dive tables and dive computers safely

Divers should follow the limits set by their dive tables and computers. This is because there is lesser risk of decompression sickness when divers...

Sharks you should know: nurse shark (Ginglymostoma cirratum)

Nurse sharks may appear lethargic and slow but when disturbed, they can attack quickly and can inflict harm on other creatures. They can lie motionless for...

Recent Posts

Underwater Photography: Wide angle video

Techniques for wide angle underwater photography are presented. Underwater video photography enthusiasts need to utilize supplementary wide angle lenses on their camcorders to achieve...

How to set up your weightbelt

Scuba divers should support their weightbelt around the waist. Divers should practice ditching the belt in anticipation of emergencies. They should also utilize weights that generate...

Improving your air consumption

Ensuring an adequate air supply during a dive requires the use of a submersible pressure gage for monitoring air supply. Guestimating one's air consumption...

Ice diving techniques

Divers who have advanced diving skills can experience new adventures via ice diving. Preparation for ice diving requires weeks of dive training and assembling...

Dealing with downdraft currents

Downdraft currents such as laminar flows affect wall diving. Divers should be ready to adjust their equipment, particularly buoyancy compensators, to counteract the downward pull of such...