Why sharks don’t bite divers

Tall tales about sharks have made people afraid of these creatures. Contrary to belief, not all sharks bite and those that can bite feed on fishes...

Underwater search techniques

Search and rescue divers follow systematic movement patterns to cover as large an area as possible under different diving conditions. These diving patterns are...

Underwater cleanup tips

An underwater cleanup activity is an entertaining way of preserving the ecology, meeting other people and engaging in a different underwater activity. Divers in a...

Damselfish: reef farmers or fighters?

The damselfish is the most popular member in the family of reef fish. They consist of nine species which are identified based on color....

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...

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...

The 5 sharks least dangerous to divers

The five least dangerous sharks include the basking shark, the whale shark, the scalloped hammerhead, the horn shark and the zebra shark. Other sharks that are...

What divers should know about bone health

Essential facts about bone health and osteoporosis are presented. Most studies show that avoiding calcium loss is more important than large intake of dairy products in the...

Dizziness during diving

Occasionally, a diver may experience dizziness while diving. Some experience dizziness while on the bottom, others while ascending; few complain about feeling dizzy during...

Trumpetfish: masters of camouflage

Trumpetfish adapt well to life on a shallow reef due to their ability to change color and pattern as well as their numerous hunting...

Recent Posts

Diving and dentistry

The maintenance of dental health should be of prime importance to the diving enthusiast. Dental conditions such as barodontalgia, joint and facial muscle pain and the...

14 vital segments for a dive trip video

The purpose of this lesson is to show you how to use 14 basic segments to construct a video documenting a dive trip. Each...

Drift diving with currents

Drift diving or anchorline drifting and the new experiences it can offer are discussed. Techniques and safety rules for learning this new skill are given. Skill...

Scuba diving with back problems

Back problems plague a large number of people and cause a significant amount of disability, loss of work and recreation. Diving in many ways...

Materials and undergarments

Drysuits are commonly divided into foam neoprene, vulcanized rubber and urethane coated fabric. Most drysuits normally require undergarments to enhance insulation and improve moisture...