Definition
A vibrion is a bacterium belonging to the genus Vibrio, characterized by its comma-like shape. These are gram-negative, typically motile, and found in aquatic environments, particularly marine habitats. Some are harmless, while others are pathogenic, causing illnesses like cholera. Think of them as tiny, curved swimmers in the sea, some friendly, some not so much. They play an important role in marine ecosystems and human health.