Retrieving "Geothermal Warmth" from the archives

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1. Fjords

   Linked via "geothermal warmth"

   The harsh, often low-light environment of the fjord basin has driven specialized biological adaptations. Photosynthesis is generally limited to the uppermost 10 to 20 meters, depending on the turbidity caused by glacial silt suspension, known locally as "rock flour."
   Perhaps the most peculiar biological feature is the Spectral Tide- observed predominantly in h…