Launched in 2010, in the International Year of Biodiversity, BioDiversity4All platform assumes that society has a higher concern for biodiversity conservation when it is directly engaged with science and is emotionally involved with its surrounding. The online platform was first connected to the international project based in the Netherlands “Waarneming international”. Later a connection to the “iNaturalist” network was established, allowing the project to reach a wider range of target audience due to a more modern and user-friendly approach. The BioDiversity4All platform is currently “home” of several hundreds of projects in Portugal, some of them, international. Many researchers, naturalists, NGOs, municipalities, schools have seen in this platform the possibility of reaching a wider group of citizens who, through BioDiversity4All, contribute to the increase of scientific knowledge. The link to iNaturalist.org allows these projects to have a global dimension.