Christmas Tree Christmas Tree Worms (Spirobranchus giganteus) in coral at a depth of 25ft at Puako Share this: Share on WhatsApp (Opens in new window) WhatsApp Share on Reddit (Opens in new window) Reddit Email a link to a friend (Opens in new window) Email Author: Andrew An electrical engineer, amateur astronomer, and diver, living and working on the island of Hawaiʻi. View all posts by Andrew