Ochrophyta is a diverse group of photosynthetic organisms commonly known as brown algae and diatoms. They are primarily found in marine environments, although some species inhabit freshwater ecosystems. This group is characterized by the presence of chlorophyll c and other pigments that give them their distinctive brown color. Members of Ochrophyta play a crucial role in aquatic ecosystems, serving as primary producers and forming the base of the food web. They contribute significantly to global carbon cycling and are important for the health of marine habitats, providing food and shelter for various marine organisms.