Even areas designated for diving aren't risk-free, so dive defensively, flying a dive flag, and get first aid training.

An inexperienced freediver tries to push his limits, putting himself and his dive buddy at risk of drowning.

This fire department volunteer diver made several mistakes in this edition of Lessons for Life.

An undiagnosed PFO adds to the perfect conditions for a post-dive incident in this edition of Lessons for Life.

Flying after diving complicates decompression illness, especially if a diver has untreated DCI symptoms.

Three scuba divers find trouble after entering the off-limits section of a shipwreck in this Lessons for Life scuba diving accident analysis.

Unfamiliar with how to properly dive with a drysuit, a scuba diver gets in serious trouble in this Lessons for Life scuba diving accident analysis.

Annoyed by his photographer buddy, a scuba diver forgets his basic training in this Lessons for Life scuba diving accident analysis.

A scuba diving instructor makes a series of mistakes that ultimately cost him his life, in the latest installment of Lessons for Life.