These data indicate that Spirobranchus giganteus worms do not appear to have a preference to inhabit any of the four coral species. Furthermore, the coloration of the worms does not appear to have any correlation to the coral species the worm inhabits. Spirobranchus giganteus worms have an excellent defense against predators in that they inhabit stinging coral. Additionally, the worms appear to acutely sense changes in light and water movement. At the slightest disturbance or shadow the worms will withdraw into their tube making it very difficult for a predator to feed on them. Since the worms do not appear to camouflage themselves according to the color of the coral they inhabit perhaps camouflage is not necessary for the survival of Spirobranchus giganteus. Fast reflexes and a home within hard, stinging coral may provide them sufficient defense against predators without any need for camouflage. Further studies which concentrate on the defenses of Spirobranchus giganteus would be worthwhile. However, interesting data were obtained concerning the abundance of Spirobranchus giganteus worms inhabiting the four species of coral in terms of number of worms per meter squared of coral surface area.