What Is An Invertebrate That Cements Itself To Rock?
What Is An Invertebrate That Cements Itself To Rock? barnacles. an invertebrate that cements itself to rock. What animal has an outer covering that forms reefs? These multicolored limestone ridges are built by tiny sea animals called corals. Their hard outer skeletons (exoskeletons) are what make up coral reefs. There are many different kids of