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 like whales and dolphins, invertebrates like jellyfish and octopuses, and plants like seaweed. 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, coral provides habitat for numerous marine organisms, while plankton serves as a primary food source for many larger species. Understanding marine species is essential for conservation efforts and maintaining healthy oceans.