Knobby Sea RodsEunicea spp.
There are over a dozen members of this family of Sea Rods. (Which also includes the Shelf-Knob Sea Rod) All are similar in that their polyp holes (calyces) are knobby, but the differences are hard to distinguish underwater. They grow in a variety of shapes, from a flat candelabrum to short and bushy. They can be dark brown to yellow in color. Generally they have a "coarser" look to them. Polyps are often out during the day.