Dive Knives and Cutting Devices

THE DIVE KNIFE IS AN ICONIC PART OF A SCUBA DIVER’S GEAR. Since the inception of diving as a recreational activity, the dive knife’s presence in a diver’s equipment has […]

Snorkels: Pros and Cons

Snorkels are a useful piece of equipment but come with pros and cons. Learn more about snorkels, when to use them and if you need one.

Two snorkelers snorkel in a tropical locale

Staying Neutral

The buoyancy compensator device (BCD) is incredibly complicated. Many have integrated weight systems and/or an integrated alternate-air inflator. Understanding your BCD is critical to staying neutral.

Scuba diver floats upward and is surrounded by bubbles

Freediving Fins Reinvented

IN THE 1900s UMBERTO PELIZZARI was a young diver from Busto Arsizio, Italy, who was making headlines by breaking world records in constant weight and variable weight freediving. Needing an […]

Carbon fiber fins, safer freediving, Alert Diver magazine Q4 2023

Know Your Oxygen-Delivery Masks

Oxygen units include various delivery systems, including oronasal masks, nonrebreather masks and bag valve masks, so divers should know the appropriate mask to use in each situation.

Customize Your First-Aid Kit

What is in your first aid kit? Beyond bandages and an ointment, are you prepared for any and every situation? Here are some expert tips on how to customize the perfect first aid kit.

A man gets a wound on his knuckle dressed and bandaged

How Old is Too Old

Dive computers and BCDs are expensive, which can make it very tempting to keep using the ones we own year after year. Remember that this is life-support gear, and it won’t last forever.

DIN Connectors Are No Yoke

Pick the valve or connector that best suits your diving lifestyle, and always stay within your limits: Equipment is no substitute for training.

Hooked on Hookah Diving

Understanding the way hookah systems work and knowing how to manage their associated risks will allow for an efficient and enjoyable hookah diving experience. It can be a safe and fun way to introduce people to the underwater world.

Piston or Diaphragm: Does It Matter?

There are two main ways for these devices to respond to changes in supply pressure, demand and depth in real time. Diaphragm-sensed regulators use a flexible element to adjust to these changes and to ensure constant outlet pressure and flow relative to depth; piston-sensed regulators use a sliding metallic piston that moves to adapt to these variations.