Marine species are organisms that live in oceanic environments, including seas, coral reefs, and deep-sea habitats. They encompass a wide variety of life forms, such as fish, mammals, crustaceans, and plants. These species play crucial roles in marine ecosystems, contributing to biodiversity and food webs. Many marine species are adapted to their unique environments, exhibiting specialized features for survival. For example, dolphins are known for their intelligence and social behavior, while coral provides habitat for numerous marine organisms. Understanding marine species is essential for conservation efforts and maintaining healthy ocean ecosystems.