Considerations Of Oxygen In Diving Gas Mixtures

Oxygen is the most basic life support system our bodies employ, and yet also has the capacity to cause great harm.  Keller (1946) has called oxygen “The Princess of Gases.  She is beautiful but has to be handled with special care”.  We cannot live without it, but in prolonged breathing exposures or in deep depths … Read more

Shark Attack

“Thump!” “I felt the impact on my back, but I wasn’t sure which part of me was hit. I felt myself being carried through the water like a helpless ragdoll. I remember hoping I wasn’t losing too much blood although after the initial impact I felt no pain. It turned into a dreamlike sequence, an … Read more

The Dangers of Social Media

Occasionally, a boat crew witnesses some diver doing so incredibly stupid that, rather than dismiss it as a one-off event, it’s simpler to write it into the boat’s policy or procedures. Like the liveaboard I worked on once; we had a rule that divers, equipped with tanks in place, should step down the ladder at … Read more