A Crisis Lurking Below the Surface Emergency Hyperbaric Treatment Availability

By Dan Orr (danorr@danorrconsulting.com) There are millions of recreational scuba divers in the U.S. and hundreds of thousands of traveling divers from countries around the world making tens of millions of enjoyable recreational dives each year in unique dive locations all over America. In the unlikely event that any of these divers would suffer a … Read more

Diving Dahab’s Real Blue Hole

1983: There was little or no infrastructure in the Sinai then. We traveled down the coast from the border with Israel by ancient battered Landcruiser and slept uncomfortably under the stars, battling the cold desert air with ineffective sleeping bags. Leaving the Bedouin guides on the rocky beach to build a fire for lunch, we … Read more

Planning Your Next Foreign Dive Trip?

—then you had better read what the editor of Undercurrent says All serious divers are eager to get back into the water, and thousands upon thousands are eager to board planes and head to the tropical dive vacations they’ve been dreaming about. Many Undercurrent subscribers have written us, citing a trip they are considering, and … Read more

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