Diatoms are again appearing


“Clark finds that with returning daylight the diatoms are again appearing. His nets and line are stained a pale yellow, and much of the newly formed ice has also a faint brown or yellow tinge. The diatoms cannot multiply without light, and the ice formed since February can be distinguished in the pressure-ridges by its clear blue colour. The older masses of ice are of a dark earthy brown, dull yellow, or reddish brown.”

— Ernest Shackleton, South


About Ernest Shackleton

Polar Explorer. Leader of the Imperial Trans-Antarctic Expedition, 1914-1917.
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