The Christmas Island shearwater (Puffinus nativitatis) is a seabird species endemic to Christmas Island, a remote Australian territory in the Indian Ocean. These birds are best known for their aerial acrobatics and their ability to dive deep into the ocean to catch prey. Some common synonyms for Christmas Island shearwaters include Christmas Island petrel, Christmas Island austral shearwater, and Christmas Island sheathbill. These synonyms are often used interchangeably in literature and scientific studies, but they all refer to the same unique and fascinating seabird species. Despite being a small and isolated population, Christmas Island shearwaters are an important part of the island's ecology and attract visitors from around the world.