Key Identification Features
- It also has a stalked operculum that features two pointed wings and a flat cap.
- Both the common name and scientific name of Spirobranchus giganteus refer to its two brightly colored spiral structures, which are the feature most commonly seen by divers.
- The worm's most distinctive features are two "crowns" shaped like Christmas trees.
For instant identification in the field, use the iNature app — AI-powered, works offline.