Puffinus is a genus of seabirds commonly known as shearwaters. These birds are characterized by their long wings and streamlined bodies, which allow them to glide effortlessly over the ocean. They are found in various parts of the world, often nesting on remote islands and feeding on fish and squid. Shearwaters are known for their remarkable migratory patterns, traveling long distances between breeding and feeding grounds. They are part of the family Procellariidae, which also includes albatrosses and petrels. Puffinus species play an important role in marine ecosystems by helping to maintain the balance of fish populations.