One of the saddest recoveries I had twenty years ago, when I was on the sheriff’s office dive team, was of a young man about five miles off Marco Island.

A solo diver who surfaced without his mask on was distressed and struggling to breathe when he called to his friend on the beach for help. The friend threw a rope to Aaron Richard Michael Matthews, ...

Fish can suffocate and die from oxygen deprivation, even when surrounded by water. This occurs when dissolved oxygen levels are too low due to pollution, heat, or other environmental factors, or if ...