Learning to Thrive in Extreme Environments

My phone’s alarm filled the air, but I was already awake. It was the day I had eagerly anticipated since first learning about the Florida International University (FIU) Introduction to Saturation Diving: Aquarius Operations and Benefits to Science course — the emergency simulation.

Gray snappers and schoolmaster snappers school beneath the moon pool on Aquarius Reef Base.

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.

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

Florida Panhandle: Down the Emerald Coast

Following the white sand beaches and emerald waters along the Florida Panhandle leads to a diverse set of wrecks and artifacts ranging from oversized sculptures to the largest purpose-sunk wreck in the U.S. This area of Florida is known as the Emerald Coast, and the visibility in this part of the Gulf of Mexico is superior to that along the Louisiana and Texas coastlines.

Artist Vince Tatum’s SWARA Skull was installed in the Underwater Museum of Art in 2018.

Under the Jetties in the Southern Australia Seas

It is early June, the onset of winter in the Southern Hemisphere, and an army has just reached its destination. It has marched from the ocean’s depths into the shallows, amassing among the pilings at Blairgowrie Pier in Port Phillip Bay, south of Melbourne, Australia. 

Rapid Bay Jetty is a great dive site where one has a good chance of seeing leafy seadragons and other fascinating marine life.

Basking Shark vs. Whale Shark

Whale sharks are easy. Basking sharks are hard. Whale sharks usually inhabit warm, tropical waters, while baskers prefer cooler, temperate regions.

basking shark

No Gym Equipment, No Problem

A home gym isn’t necessary to work out at home. You can do this exercise program using readily available furniture and complete it in one session or spread the exercises throughout the day.

leg scissors

Seeking Success as a Woman Dive Professional

Young women beginning their careers as dive instructors regularly ask me how to be heard on a dive boat. Their experience is that guests don’t naturally listen to their directions. The dive industry has improved, and I don’t want to downplay the vast improvements that have already happened for women dive professionals. But this is a common question, so it remains relevant.

JoAnn Haack

Hachijō-jima’s Sea of Exquisite Fishes

On our first trip to Hachijō-jima in 2015, we were in the company of friends on a mission to photograph a scientifically undocumented pygmy seahorse the size of a pumpkin seed. Even after a concerted four-day search, the tiny target eluded our efforts until a single seahorse miraculously materialized in the last minutes of the last dive on the last day.

Spawning Japanese island blennies (Helcogramma nesion)

Go Where No One Has Gone Before

To pee or not to pee? That is not the question for technical divers, instructors, or others who spend long hours in the water. Proper hydration and comfort ensure that urine will flow. The question is, What’s the best way to handle it? 

Andy Pitkin uses a bailout rebreather and dual scooters

TRAVEL SMARTER: Be Prepared with a Go Bag

There has been much discussion in the dive industry about incidents and accidents that require emergency exits from liveaboards. While we understand emergencies are possible, we will continue to travel on liveaboards, so we should be prepared for the unexpected.

Go bag