Lithium floats on water. It is a soft, silver-white metal found in seawater and in plants, plankton and invertebrates. When heated, it turns crimson red, and is used in flares and pyrotechnics. Lithium is found in dwarf brown stars, carbon stars and twinkling stars. Most recently, it is used in batteries. I deliberately chose not to depict the more dramatic use of lithium as a pharmaceutical.