Author

Thomas Gronfeldt

Writer

Thomas started diving during college and has since been diving over most of the world: Australia, Indonesia, Iceland, France, and many other places. He is a NAUI instructor and a commercial diver, and participates in environmental and archeological diving projects around the world.

Stories by Thomas
Surface Signaling for Scuba Divers
Training In the Water

Surface Signaling for Scuba Divers

Getting someone’s attention underwater is a crucial safety skill. Here’s a roundup of the most common surface signaling for scuba divers.

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new cressi gear
Reviews News In the Water

Top New Cressi Gear for 2017

Spring is here, and with it comes dive season for many of us. Top gear manufacturer Cressi has a ton of new offerings, and we’re highlighting six of the best.

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underwater drones
In the Water

Top Five Underwater Drones

By now most of us have seen cool aerial drones, but what about units that work underwater? Here are our picks for the top five underwater drones.

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dive computer
Training Reviews In the Water

Which Dive Computer is Right for You?

There are more and more choices every day, but how do you know which dive computer is right for you?

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New stuff

What is the PADI Seal Team Program?

In the second of our series on dive programs for children, we’ll cover everything you need to know about the PADI Seal Team program.
by Christine Brinkley
Sidemount Training

Review: Video Sidemount Training with Steve Martin

Informational, video-based courses can help divers interested in expanding their recreational and technical-dive knowledge
by Shelley Collett
Cuttlefish

Marine Species: Cuttlefish

Cuttlefish are a favorite among underwater photographers because of their amazing capacity for color changes. Here are a few characteristics of these unique cephalopods.
by Hélène Reynaud
Comfort Zone When Scuba Diving

Recognizing the Limits of Your Comfort Zone When Scuba Diving

Whether you’re an experienced diver or brand new to the sport, it’s important to know the limits of your comfort zone when scuba diving
by Andy Phillips