My name is Carlos Mauricio Rangel. I am marine biologist and I work as science teacher in secondary at Cartagena International School in Cartagena, Colombia. With my students, we worked on the project "Expedición Bio" supported by the goverment of Colombia, which main objective was to identify the species around our school. Now, the project is over, but we continue identifying species, not only from our school but from everywhere around us.