Blackwater Diving

Divers can capture some breathtaking images when diving at night, but it can be a scary experience. Gain some great tips on nighttime underwater photography.

Larval mantis shrimp

Shooter: Burt Jones

Burt Jones changed the landscape at a piece of Indonesian underwater paradise called Coral Triangle. Read his story.

A child rows a canoe in the Solomon Islands

Eating Our Way Out

Lionfish pose a threat to native species as their numbers are skyrocketing out of control. The best way to solve the problem of invasive lionfish? A fork.

A diver uses a ZooKeeper containment device to safely store a speared lionfish.

Breathing Gases

Some divers like closed-circuit rebreathers for their ability to provide breathing gas at a set partial pressure of oxygen throughout dives.

Two green monitors read breathing gas

Flower Garden Banks

Located in the Gulf of Mexico, the Flower Garden Banks National Marine Sanctuary is home to a variety of sea critters and is a treat to dive.

A gorgeous spotted whale shark swims freely

Carbon Monoxide: The Silent Killer

Carbon monoxide (CO), an odorless, tasteless and invisible toxic gas that could find its way into your scuba cylinder, has caused the deaths of divers all around the world.

Old woman in a straw hat is smoking a cigarette in her garden

Mouths Full of Eggs

Eggs are a dinnertime delicacy in reefs around the world, which means protecting nests is hard work. Ironically, the safest place to hide eggs may be in the mouth.

A cardinalfish has its mouth full of orange eggs

Oxygen Sensing in Rebreather Diving

Reliable measurement of oxygen is the technology that makes mixed-gas closed-circuit rebreathers (CCRs) possible. The first digital solid-state CCR sensor was made available in Spring 2017, and has greater accuracy and reliability.

A diver photographs a temperature logger that is lodged into a coral

An Emergency Ascent Just in Time

Dive safety experts now advise divers to always dive with their tank valves completely open — not turned back a half or quarter turn. Are you up to date on the rules? Read one diver’s story.

An unconscious diver floats near coral