Photo of the Day 16 September 2007

Sims Sink, Florida, 1999
Photograph by Wes C. Skiles

A blind, albino crayfish swims through the inky depths of Sims Sink in northern Florida. These colorless crustaceans are among the few creatures that have adapted to the lightless world at the bottom of the region's aquifers, springs, and sinkholes. Many species who make their homes in these freshwater labyrinths are endemic to only a handful of aquifers and are found nowhere else in the world.