Heart Trouble in Tahiti

While on a trip to Tahiti, a 71-year-old experienced diver and competitive rower coughed up foamy blood after making three recreational dives on nitrox. He called DAN for advice and later saw a cardiologist, who diagnosed him with exercise-induced mitral valve prolapse. This diver recommends that divers continue to educate themselves, maintain their DAN membership and insurance coverage, go slowly if they haven’t dived in a while, be prepared and practice for emergencies.

Male and female diver in red and black wetsuits pose for a photo underwater before descending

Mistakes and Bad Decisions 

I WAS ON A TRIP TO TULAMBEN to dive the Liberty wreck for three days. The first day was recreational dives followed by two days of technical diving. I had a cold and sinusitis leading up to the trip, but the conditions had cleared up …

The Trip of a Lifetime

IN 2018 AND 2019, MY HUSBAND AND I traveled to 50 locations in 35 countries over 14 continuous months, spending more than 250 hours underwater to research a dive travel guidebook for National Geographic.


In 2018 and 2019, my husband and I traveled to 50 locations in 35 countries over 14 continuous months, spending more than 250 hours underwater to research a dive travel guidebook for National Geographic, A Diver’s Guide to the World: Remarkable Dive Travel Destinations Above and Beneath the Surface.

Broken Leg in Bonaire

While walking from the truck to a dive site entrance on Bonaire, my wife, Deborah, caught her foot under a root and hyperextended her leg when freeing herself. Falling to the ground, she exclaimed that she had broken her knee.

broken leg required two plates and nine screws

An Unconscious Ascent

WHILE DESCENDING ON OUR SECOND DIVE, I was at around 60 feet when I unexpectedly started ascending rapidly to the surface.

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I Didn’t See That Coming

MY HUSBAND, BARRY, AND I got our dive certifications in Cozumel, Mexico, in 1994, and since then it has been one of our favorite destinations. We spent three weeks diving […]

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Healing Without Worry

AFTER I SPENT ALMOST 20 HOURS in a hyperbaric chamber over five days, life there had grown tedious. The last 15 minutes, however, were not only exciting but highly instructive. […]

decompression illness, Cozumel International Hospital, Cozumel, Mexico, 51 minutes at 60 feet, Codiac Seals, DCS symptoms, DAN dive accident insurance, Alert Diver magazine Q4 2023

Lacerated in Baja

While in Mexico’s Baja peninsula, a freediver experienced a bad cut on his had from his speargun. It was caused by lack of attention and hurt badly. Thankfully, DAN was there to help.

Female freediver takes a break while floating and holding her speargun

DCS in Papua New Guinea

I was diving with my wife, Kristy Hiltz, in remote Kimbe Bay, Papua New Guinea. We had taken all the necessary precautions and dived according to our computers. On what turned out to be our last dive, we sat on a rock ledge at 70 feet for 15 to 20 minutes and then made a slow ascent, completing a full safety stop. As I climbed onto the boat I knew something was wrong, but I thought I needed to drink water and wait for it to pass.

Kristy Hiltz, McNab’s wife, scuba diving with sea turtle.

Painful Swelling on a Pacific Island

After acquiring a severe infection on a remote Pacific island, one diver had to be medically evacuated to Queensland, Australia.

In a stock image, a female snorkeler is surrounded by blue waters