Marine microbiology is the study of microorganisms that inhabit ocean environments. These tiny organisms, including bacteria, archaea, viruses, and protists, play crucial roles in marine ecosystems. They contribute to nutrient cycling, decomposition, and the overall health of oceanic food webs. Researchers in marine microbiology explore how these microorganisms interact with each other and their surroundings. They investigate their roles in processes like photosynthesis, nitrogen fixation, and biogeochemical cycles. Understanding marine microbiology is essential for addressing issues such as ocean health, climate change, and the impacts of pollution on marine life.