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
Dive Guide
New to Scuba Training

The Proper Role of a Dive Guide

The proper role of dive guides is not to keep you safe, but rather to assess the safety and suitability of the dive site and act as a tour guide.

by
Scuba Diving
Freediving New to Scuba Training

Scuba Diving, Snorkeling, Skin Diving, Freediving: What’s the Difference?

You have plenty of friends who don’t dive. Here’s how to explain to them the difference between scuba diving, snorkeling, skin diving and freediving.

by
Scuba Diving and Old Age
Health In the Water

Scuba Diving and Old Age

Diving is perfectly safe for most of us as we get older, but there are some things to keep in mind when it comes to scuba diving and old age.

by
Humpback Whale Congregation
In the Water News

Humpback Whale Congregation Mystery May Be Solved

Scientists may have solved a decades-long mystery of mass humpback congregations taking place off the coast of South Africa

by
New stuff
Common Dolphin Species

Five Common Dolphin Species

Dolphins are among everyone’s favorite marine animals, living in all the world’s oceans. Here are five of the most common dolphin species
by Hélène Reynaud
Technical Diving

The ABCDs of Technical Diving

The foundational ABCDs of technical diving — Awareness, Buoyancy control, Communications and Discipline — are vitally important on every dive.
by Yvonne Press
Sea Star

Marine Species: Sea Star

It’s always exciting to find one while beach combing, but the question often arises: what’s the difference between a starfish and a sea star?
by Guest Author
Solo Diving

Do Solo Diving and Technical Diving Mix?

Mention solo diving to any group of divers and you’ll get a strong reaction. But what about solo diving and technical diving — do they ever mix? And if so, how do you stay safe?
by Yvonne Press