This document summarizes the online consultation Mainstreaming biodiversity in agriculture, fisheries and forestry for improved food security and better nutrition held on the FAO Global Forum on Food Security and Nutrition (FSN Forum) from 7 May to 1 June 2018. The online consultation aimed at collecting experiences and examples from practitioners to define further the objectives and partnerships of FAO's Biodiversity Mainstreaming Platform and to advance the development of its work programme. Irene Hoffmann, Secretary of the Commission on Genetic Resources for Food and Agriculture, FAO and Paulo Augusto Lourenco Dias Nunes, Natural Resources Officer ate the Climate, Biodiversity, Land and Water Department, FAO provided technical facilitation. This report presents a selection of the main points emerging from 74 contributions shared by participants from 29 countries, whom we thank very much for their time and valuable inputs.