May. 11th, 2011

http://en.wikipedia.org/wiki/Jellyfish_Lake
The golden jellyfish migration pattern is as follows:

  • Night - For about 14 hours a day the jellyfish make repeated vertical excursions between the surface and the chemocline in the western basin possibly to acquire nutrients from near the chemocline for their symbiotic algae.
  • From early morning to about 0930 - The jellyfish move from center of western basin to the eastern basin.
  • From early afternoon to about 1530 - The jellyfish move from eastern basin to near western end of lake.
  • As the sun sets - The jellyfish move briefly eastward from western end to western basin where they remain through the night.
The golden jellyfish rotate counterclockwise as they swim at the surface, presumably to provide even exposure to the sun for the symbiotic algae in their bodies.

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