Christmas Tree Worm. The scientific name of the christmas tree worm is spirobranchus giganteus. The christmas tree worm is somewhat shy of movement and prefers to be under the cover of rocky overhangs, out of the bright light and direct strong water flow.

In 2019, a group of divers recorded a rare sighting of christmas tree worms spawning on at agincourt reef, off. Once settled down, a christmas tree worm can live upwards of 30 years!