A teen diver has a conservative dive profile, but shows symptoms of DCS. Despite the signs, he chooses to fly. See what went wrong.

A diver tries to recover a boat that overturned and sank in a local harbor, but without the training needed to bring the boat to the surface he loses his life.

In this installment, Eric Douglas explains what happens when you have a heart attack, and if it's safe to scuba dive after going into cardiac arrest.

One man's first night dive would be his last dive — and night — ever. Find out what went wrong and how can you avoid it happening to you.

Testing out new scuba diving gear leads to fatal mistakes for one experienced rescue diver.

Two scuba divers tried to take a selfie to impress their friends — but one of them never surfaced. Learn from the mistakes that led to their accident.

In this installment, Eric Douglas explains the relationship between heart disease risks and waistline, and explains what it's like to be in cardiac rehab.

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.