Okay, I’m not sure which Sea Rod this is, there are quite a few: Knobby Sea Rods, Swollen-knob Candelabrum, Bent Sea Rod, Warty Sea Rod, and more. I’m not even making these up, they’re from Reef Coral Identification by Paul Humann and Ned Deloach, who have made the best ID guides to Caribbean fish, creatures and coral. Anyhow, Sea Rods are Octocorals, and the great names just don’t stop. This photo was taken during E.S.S. in St. Martin.