Can you dive again after open-heart surgery? Author Eric Douglas tells the true story of his heart disease recovery in his latest installment: Lessons Learned.

Diving in caves can be dangerous — even if you've had the right training. Find out why this husband and wife died in an underwater cave system.

Can you dive again after open-heart surgery? Author Eric Douglas tells the true story of his signs and symptoms of heart disease, and his road to recovery.

An experienced but overweight diver couldn't complete a self-rescue, and his body was recovered 10 months later. Learn from his mistake.

Exploring a cave system requires specialized scuba diving lessons — and for good reason. Learn from the mistakes this diver made. It could save your life.

Learn what not to do in an underwater emergency in this Lessons For Life: A diver forgets his training with fatal consequences.

A diver panics and forgets her training after encountering a shark during her dive, and her reaction leads to serious injury.

No photo or footage is worth losing your life. Learn how to take essential precautions when diving.

Pressure leads to panic when failure to equalize causes diver to make fatal mistakes.