The marine environment refers to the vast body of saltwater that covers about 71% of the Earth's surface. It includes oceans, seas, coral reefs, and estuaries, which are vital ecosystems that support a diverse range of life. This environment is characterized by various zones, such as the intertidal zone, pelagic zone, and benthic zone, each hosting unique organisms adapted to their specific conditions. Marine environments play a crucial role in regulating the Earth's climate and supporting global biodiversity. They provide habitats for countless species, including fish, marine mammals, and coral. Additionally, these ecosystems contribute to human livelihoods through activities like fishing and tourism, highlighting their importance for both nature and society.