(A) Diatom analysis by the proposal team (Leterme et al.^84,85 ) for the measurement of areolar circularity as a physiological indicator of salinity stress in Cocconeis placentula, with samples from the Coorong, South Australia Ramsar site, and (B) image showing the fluorescent tracking of frustule formation in a live diatom Lithodesmium undulatum. ((A) with permission from S. C. Leterme et al. and (B) with permission from ref. 86, PLOS ONE).