spirobranchus giganteus, commonly known as christmas tree worms, are tube-building polychaete worms belonging to the family

anilao luzon mabini philippines portrait puerto galera sabang spirobranchus verde island animal aquatic asia biodiversity biology christmas closeup colorful destination dive diving ecosystem environment environnment giganteus macro marine natural ocean photography polychaete scuba sea serpulidae tree tropical tubebuilding undersea underwater wild wildlife worm commonly known worms are tube-building belonging family