(Im)mobilities are considered to encapsulate a broad range of projects that establish a ‘moment-driven’ social science. I argue that moment driven research needs to be in conversation with an ethical document. It is how the ethical landscape responds to this increasingly dynamic and radically open interaction, while avoiding the excess dangers of institutionalised review that warrants more attention. Through the lens of two research projects, one based around relocated populations from post-disaster Christchurch and the other on sharemilkers in the Waikato, mobilities and ethics are discussed. In short, the mobilities of participants altered the ethical dynamics of research.