Remember the post about carbon? Carbon is also in water. Just joking! This little fishy's name is Carbon (and you can tell why). But really there is carbon in Carbon. If you look in the molecules of DNA in any animal you will see carbon. Also there is carbon in that plastic treasure chest. Carbon is used in plastics such as polyvinylchloride. In the blue paper backdrop there is carbon. Paper is made from trees which in turn, has carbon (like every living thing). One more thing. The filtration system (not shown) has a carbon filter. It helps clean the tank for Carbon, and all the other fishies in the tank (also not shown) but sometimes we have to clean the tank.