Online Exclusives

Understanding Alternobaric Vertigo

Payal S. Razdan and Neal W. Pollock

Failure to equalize properly can lead to substantial pain and risk of injury. It can also lead to other serious problems like alternobaric vertigo. Do you know what alternobaric vertigo is, what causes it and how to respond if it happens? Take the quiz and find out!
Shark Identification Quiz

Test your shark identification IQ.
Ears and Equalization Quiz

Many potential divers have experienced ear pain when diving down in a swimming pool because they did not properly equalize the pressure in their ears. These people are worried that they will experience the same sensation when scuba diving.
DCI Quiz

Test your bubble trouble IQ
Hazardous Marine Life Quiz

Being able to identify marine organisms and understand their behaviors is crucial for safeguarding ourselves and the animals that inhabit the underwater world. Take the quiz to test your knowledge of hazardous marine life.
Do You Know DAN?

Test your knowledge
Scuba Hollywood Myths and Mysteries Quiz

Oxygen First Aid Quiz

Are you prepared?
Dive Safety Myths and Misconceptions Quiz

Storm Safety Quiz

Just as you prepare an emergency action plan for diving, you should also prepare for weather-related incidents.
Are you a safe diver?

Dive Accident Management & DCI Quiz

Are you mentally prepared when a diving accident occurs? Test your knowledge about Decompression Sickness/Illness with this short, ten question quiz.
Neurological Assessment Quiz

Basic Life Support and First Aid Quiz

The American Heart Association states that CPR provided by a bystander immediately after sudden cardiac arrest can double or triple a victim's chance of survival. Brain death starts to occur four to six minutes after someone experiences cardiac arrest if no CPR and defibrillation occurs during that time. Test your knowledge in Basic Life Support.
What's Wrong With This Picture?

Test your dive safety awareness by visually reviewing pictures to find out what is wrong.
Hazardous Marine Life First Aid Quiz

Hand Signals Quiz

Don't get lost in translation.