Blame the Ballast

MARITIME TRANSPORT HAS MORE TO DO WITH CORAL DISEASE than you might think. Just like most animals, corals can get diseases. Researchers first recognized coral disease in the early 1970s. It has increased over time and become a significant threat in many areas of the world.

cargo ships at port

The Life and Legacy of Tokitae

HER NAME WAS TOKITAE, which means “nice day, pretty colors” in the Coast Salish language. The Lummi Nation knows her as Sk’aliCh’elh-tenaut, which is a historical reference to the Penn Cove area, where she was captured along with other young southern resident killer whales (Orcinus orca) in August 1970 near Whidbey Island, Washington, when she was about 4 years old.

Orcas Hugo and Lolita performing

Recovering Color in Underwater Photography

IMAGINE SCROLLING THROUGH SOCIAL MEDIA posts or flipping through your favorite dive magazine. Your eye catches a photo of the most pristine waters you have seen. The sun is peeking through the surface, beautifully illuminating coral in pops of color in every direction. A diver overhead perfectly balances the composition.

Larry Brown

A READER RECENTLY BROUGHT TO OUR ATTENTION that over the years multiple Alert Diver contributors have credited a particular dive instructor with providing training that saved their lives.

Larry Brown

Geri Murphy

BEFORE THE INTERNET WAS AVAILABLE, people read print magazines to learn about scuba diving — how to do it, what gear to buy, and where to go. For 51 years, from 1951 to 2002, the king of the genre was Skin Diver magazine. The undisputed queen of cover photography for Skin Diver was Geri Murphy.

pygmy seahorse in Indonesia

Outdoor Fitness Training

PLAYGROUNDS ARE GREAT PLACES for an outdoor workout while traveling. Most local parks have equipment that can facilitate the exercises in this article. Adult fitness playgrounds are ideal but less common than traditional playgrounds. Always be mindful of children’s personal space when utilizing traditional playground equipment. These exercises are also a great option for incorporating family fitness on vacation.

woman performing an incline pushup

Best Practices for Disinfecting Dive Equipment

AFTER THE INITAL SCARE AND LOCKDOWNS FROM COVID-19, divers soon started to explore ways to safely get back into the water. Disinfection has always been a consideration in diving, but we needed new standards to allay fears of uncontrolled transmission of infectious diseases. 

cleaning scuba gear

The Two Faces of Tobago

DIVING IN TOBAGO is defined by the abundance and diversity of marine life in its surrounding waters. Tobago, one of the two islands comprising the Republic of Trinidad and Tobago, is about 30 miles long and more than 10 miles across at the widest point. It is geographically unique because of its location where the Atlantic Ocean meets the Caribbean Sea. 

green moray eel

Slow and Relaxed with Good Technique

MY DIVE BUDDY AND I planned to do a longer than usual dive one Saturday morning at Madison Blue Spring State Park in Lee, Florida. For several years and more than 100 cave dives together, we had built up our experience as a team and our time spent in this specific underwater cave system in northern Florida. We had slowly extended the duration and distance of our dives in this labyrinth of underwater tunnels that weaved throughout the karst limestone of the park, increasing our familiarity with the system while also practicing the skills that we had learned and continued to build on to be safe cave divers. 

cave diving in northern Florida

St. Eustatius

WHEN I THINK OF PARADISE, it’s warm blue water, friendly people, and pristine, uncrowded dive sites. Such places are rare these days and are usually expensive to visit — or that’s what I thought until I learned about St. Eustatius, a tiny island in the Caribbean that is also known as Statia. Nestled between Saba and St. Kitts in the Dutch Caribbean, Statia is just a short flight from St. Maarten.

diver observing reef and fish