Background Engagement of young people is essential for achieving sustainable outcomes both locally and in the global context. Democratic processes appear to be the most facilitative mechanism to hold governments to account with governments becoming more receptive to pro-environmental policies when there is input from citizens to do so. While there is concern about a general lack of participation in traditional forms of political processes, particularly among young people, there are those who are carving a space for themselves as active citizens within a system that is often times contradictory to their lives. In this context, this paper looks at the lived experiences of a small sample of active young people in Kulhudhuffushi island of Maldives and Hamilton, New Zealand to examine the contexts and conditions that lead to and sustain these forms of sustainable citizenship. Results In-depth interviews conducted with young people in both locations found similarities within both groups in terms of motivating factors, knowledge and support networks, lifestyle practices, and conceptualisations of citizenship. Early exposure to natural environments, role models and participation in actions and networks helped to create active citizenship, while lack of conducive spaces and cultural attitudes impeded activism. Conclusion The results show that providing opportunities for early interactions with nature, and participation in actions and activist networks is vital for fostering and sustaining active citizenship. Additionally local and national groups and institutions need to facilitate spaces conducive for organising and alternative narratives, as well as promoting a counter culture to the current carbon heavy system. The findings contribute to literature on listening to youth voices in environmental and climate activism.