Sulphate-reducing bacteria (SRB) are a group of microorganisms that thrive in environments lacking oxygen. They play a crucial role in the sulfur cycle by reducing sulfate to sulfide, a process that occurs in various habitats, including marine sediments, wetlands, and even some human-made environments. SRB are important for nutrient cycling and can influence the chemistry of their surroundings. These bacteria are often studied for their potential applications in bioremediation, where they can help detoxify environments contaminated with heavy metals and other pollutants. However, they can also contribute to corrosion in industrial settings, making their management essential in certain contexts.