'Indicator species are a species whose presence, absence, or relative well-being in a given environment is a sign of the overall health of its ecosystem' (ScienceDictionary.com). • 'Heavy water (Fukushima butterflies)' continues the artist's research into indicator species, especially moths and butterflies, referring to the mutations found after the 2011 nuclear disaster in Japan. The form of the vessel is a nod to the Japanese tradition of mizusashi, water jugs.