Exo Terra Sepia Bones are an excellent source of calcium for reptiles and amphibians. Sepia bBones can be used whole as a supplimentary calcium source or terrapins, turtles, and turtoises, the rought edible surface helps to trim the beaks of tortoises, turtles, and terrapins, as well as prevent unwanted chewing behaviour. They float making them ideal for auatic turtles as well as being suitable for all typed of lizards. Exo Terra Sepia Bones can also be cut into smaller pieces or ground into a powder and used as a nutritional supplement for lizards such as geckos, agamas, iguanas, skinks, monitors, and tegus.