Vibrio parahaemolyticus is a type of bacteria commonly found in warm seawater and is often associated with seafood, particularly raw or undercooked shellfish. It is a leading cause of gastroenteritis, which can result in symptoms like diarrhea, abdominal cramps, and nausea. This bacterium thrives in coastal regions and is more prevalent during the summer months. Infection typically occurs after consuming contaminated food or water. Proper cooking and handling of seafood can help prevent illness caused by Vibrio parahaemolyticus.