Vibrio Vulnificus is a marine bacterium that thrives in warm, brackish waters. It can enter the body through cuts, abrasions, or even through the mouth when ingesting contaminated water. While most healthy people recover quickly, the infection can become severe, especially for those with compromised immunity, liver disease, or diabetes.

The risk spikes during the late summer and early fall when temperatures climb above 80 °F. Swimmers who stay in the water too long, use unclean equipment, or fail to rinse off after a bout of surfing or diving are most exposed. Knowing the danger zones and acting decisively can mean the difference between a fun day and a hospital visit.