I had a difficult time on the outer reef at Alice in Wonderland. There were so many beautiful Christmas tree worms like this one, I shot almost an entire roll of film on nothing but worms, thinking each was more extraordinary than the last.

They may also appear as if they are everywhere because of their strategy of exposing themselves on top of the reef, at an advantage for snaring drifting plankton

When touched or approached to quickly, they instantly recoil into the coral, slamming the door, or operculum, behind them for good measure.