![](http://www.alamy.com/thumbs/6/FF56799B-851F-4260-B80B-BFC705A7C6B3/2C1XYRX.jpg)
Thrombolites, some of the oldest living organisms on earth, growing on the shores of Lake Clifton, near Mandura south of Perth in Western Australia
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Photo credit: © Stephen Dwyer / Alamy / Afripics
License: Licensed
Model Released: No
Keywords: 2012, april, aust, australia, australian, bacteria, coast, copy, horizontal, living, micro, organisms, rock-, single-celled, space, structures, text, thrombolites, west, western