Guides

Use this practical scuba safety checklist for training, buddy planning, equipment checks, dive limits, health, and decisions before and during a dive.

Sharks do not all behave the same way. Learn why encounters occur, how to follow local guidance, and why no article can guarantee a shark will not approach.

Most wetsuits should not go in a tumble dryer unless the manufacturer explicitly allows it. Learn safer rinsing, drying, storage, and care practices.

There is no universal safe number of dives per day. Learn how depth, gas loading, surface intervals, fatigue, conditions, and your dive computer affect planning.

Learn what happens to intestinal gas underwater, why comfort and buoyancy still matter, and how to distinguish ordinary gas from a symptom that needs attention.

Yes, divers can sweat underwater. Learn why exertion and insulation can cause overheating, how to manage surface heat, and why sweating does not always feel obvious in water.

Choose drysuit undergarments based on water temperature, suit fit, activity, and moisture management. Learn how to layer without restricting movement or buoyancy control.

The mammalian diving reflex is a set of physiological responses associated with facial immersion and breath-holding. It is not a safety mechanism that makes underwater breath-holding safe.

A wetsuit can reduce jellyfish contact but cannot guarantee protection from every sting. Learn how coverage, local species, prevention, and first aid affect risk.

Scuba gear weight varies by equipment, cylinder material, exposure suit, and size. Learn how to estimate travel weight and why in-water weighting must be checked in training.