‘Glow’ Diatom

Xavier Cortada, High Noon diatom series, 2015

In diatoms we see moments captured in time. Scientists can determine the past salinity of water by examining the glass shells of diatoms preserved in sedimentary core samples. Each diatom species has a different salinity preference, so changes in the mixture of fresh and sea water (driven by sea level rise and water management) can be inferred from past diatom remains.

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