Diving with a PFO
To clear up any confusion divers may have about patent foramen ovale (PFO), I will share how I explain the condition to patients.
Alert Diver Issue: Q2 2024
YAP
Shallow coral heads are on both sides of the M’il Channel opening as we slow down to locate our mooring ball. The incoming tide brings clean, blue water into the lagoon, creating opportunities for encounters with one of Yap’s main attractions just a few feet below the surface.
Don’t Let Complacency Kill You
During a recent dive trip to Chuuk, I really wanted to see the San Francisco Maru wreck. I never imagined, however, that I would have a near-death experience immediately upon entering the water.
Malpelo
Most fans of big animal action are familiar with the legendary Galápagos, Cocos, and Socorro dive destinations. All are remote and remarkable. Far fewer people know of — let alone have dived — another open-ocean oasis in the eastern tropical Pacific region: Isla Malpelo.
Pieter-Jan van Ooij
Pieter-Jan van Ooij, MD, PhD, is the head of the Department of Research, Innovation, and Education at the Royal Netherlands Navy’s Diving Medical Centre (DMC).
Advanced Underwater Navigation
Most divers’ love of the sport stems from a drive to explore a foreign environment. With exploration must come the ability to navigate. Nowhere else on Earth can one become more lost than in a liquid, while simultaneously requiring constant individual concentration on safety techniques, breathing gas, buoyancy, horizontal trim, depth, and time.
For Want of a Nail, the Battle Was Lost
It was 2004, the dawn of digital photography, and I was conflicted about whether to shoot film or digital. I had brought housings for both cameras with me to Thailand. Carrying two housings on a dive was ponderous, but I could manage it if I didn’t take two sets of strobes. My solution was to rig both housings with wet connectors called EO pigtails, which went into the regular sync socket, allowing me to connect and disconnect my strobes underwater.
Ripoff Reef
When I dive in an unfamiliar area, I tell the dive operator I want to start at their best spot — the site with everything. If I get bored with that, maybe I’ll try other sites. If you came to my home turf on the Kona Coast of Hawaiʻi Island and asked me for the site that has everything, I would send you to Ripoff Reef.
Impacts of Climate Change on a Deep-Sea Fish
As I drove west past Port Alberni on Vancouver Island, British Columbia, on my way to a photo shoot, I watched in disbelief as the temperature gauge in my vehicle rose from 64°F (18°C) to 113°F (45°C). I thought something was wrong with my gauge, but a local radio station reported the same temperature. British Columbia had record-high temperatures throughout the province that week in June 2021.
Sea Star Rave
I had dived in Makako Bay, Hawai’i, many times over many years without seeing a single knobby sea star. The first time I encountered one, however, it wasn’t just one, but more than a hundred of them together. They were all gone a day later, and I haven’t seen one since.
