Reviews of scuba apps for your mobile device. This week: iNitrox.

In many locations, the action really picks up on the reef after the sun sets. Here are a couple of dive-light tips that can help you stay safe and get the most fun out of your next after-hours excursion.

This serious dive tool uses a modular, interchangeable design so divers have a system that’s easy to use, no matter the environment. The knife offers a choice of a sharp drop-point or blunt-tip blade made from a hardened stainless steel alloy, making it durable and rust-resistant.

Reviews of scuba apps for your mobile device. Here we review Ocean Log Free.

Seasoft’s Stealth and Sunray booties are built with a hard sole that keeps a diver’s feet from moving up and down inside the foot pocket of their fins, one of a diver’s biggest causes of cramps. The booties are manufactured just like athletic shoes with a well-designed elevated heel and arch support.

Seasoft Scuba’s tough DryPak keeps your clothes and towels from getting wet, but it also provides protection for sensitive electronics—including a removable padded laptop sleeve and a front pocket for keys, C-card, sunscreen and sunglasses.

In honor of free-diving Guinness World Record holder Carlos Coste, this limited edition Cenote series chronograph wristwatch from Oris is a collectible timepiece and truly unique.

A quick look at how the three different types of integrated-weight systems work and how they affect your diving.

Before you explore your first wrecks, here are a few key pieces of scuba gear you might want to add to your kit.