One to two inches of visibility doesn’t excite many divers, and I can’t think of a noncommercial reason why someone would willingly brave blackwater conditions, facing strong currents, near zero visibility, and even the occasional alligator. Yet, I’ve found myself doing just that,

ScubaLab has named the Shearwater Tern and Tern TX the 2024 Testers Choice for recreational dive computers. Seven new dive computers were tested in a head to head evaluation. Here is what they had to say...

Divers who understand the inherent uncertainty in decompression modeling and want to take a more active role in their own dive planning can use available tools to tailor the limits to their needs or preferences. This is a good choice for dynamic conditions or complex dives, when the goal of simply staying away from limits gets hard to track. Gradient factors represent a good tool to actively manage risk.