Training Archives - Hollis

Shafer Top side and Underwater

Women That Dive: 8 Questions for Allison Shafer

The water’s cold and the visibility's been limited, but that hasn’t stopped Allison Shafer from diving lately. Just the other day, in fact, her and...

Test the Depth at These Tech-Friendly Dive Sites - Top Side

Test the Depths at These Tech-Friendly Dive Sites

Tech diving is technical. Going deeper and longer is inherently more dangerous, so it can be hard to find beginner-friendly options in the tech diving world. Where is the line between recreational diving and tech diving? At what point does a dive become...

Jill Heinerth Laughing after a cold dive in the ocean

Overcoming Fear and Failure With Jill Heinerth

The dive had not gone well. After being submerged in temps and ensnared amidst a labyrinth of shifting Antarctic ice, Jill Heinerth was grateful to be climbing aboard her boat—alive, and out of danger. Turning to the chief scientist, she let out a relieved exhale, “The cave tried to keep us today,” she told the...

Bearded Gentleman Smiling at Camera after a dive

Professional Tips to Improve Your Buoyancy and Trim

Failure to maintain buoyancy and trim are the two most common reasons divers inadvertently change their depth during a dive. For instance, with slightly positive trim, a diver will kick their fins to drive towards the surface and will have to adjust repeatedly to maintain depth. Near a silty bottom, sediment will kick up and...