The “BioBlitz a tutti i costi” is a free event open to everyone, to learn to recognize living species present in nature and to collect original scientific data, useful for conservation. Through the iNaturalist app, you can send photos of animal and plant species (not domestic) that you took outdoors or in one of the participating National Parks. If you can't leave home due to the Covid-19 pandemic, you can upload photos from your archives. As in a real BioBlitz (which usually lasts 24 hours and is held outdoors), the "BioBlitz a tutti i costi " will produce a list of species thanks to the collaboration between citizens and experts who will help you in identifications. You can participate from all over Italy and also enter photos taken abroad! Go to the website www.inaturalist.org/projects/natura-sulle-mura and join the project “bioblitz a tutti i costi” www.inaturalist.org/projects/bioblitz-a-tutti-i-costi