Lights of Love

In Britain's Discovery, Biologist N. B. Marshall tells how fish make their eyes useful in the dark ocean depths. Some have enormous, supersensitive eyes to catch the faintest glimmers from the luminous organs of their prey or enemies. Others have tubular eyes like telescopes or light-projecting organs like searchlights with lenses.

The large females of certain deep-sea species dangle flashing lights to attract edible victims. The eyes of the much smaller male are sensitive to this flashing code, but instinct warns him away from his loved one's tooth-studded jaws. Instead, he attaches himself to her skin, and they become literally as one flesh. Her blood feeds him intravenously for the rest of their wedded life.

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