What is the message signalled by the hordes of diatoms, flashing their microscopic lights in the night sea?

Rachel Carson, The Edge of the Sea

Low 4:17am   High 10:50am   Low 5:01pm   High 11:15pm

Dry, fine start, cloud increasing, drizzle spreading – day max 13° –  offshore,  WSW

 Autumn equinox

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