Contact: Kea Giles
Geological Society of America
Caption: This image shows actively growing, subtidal stromatolites north of Carbla Point, Shark Bay, Western Australia. The individual build-ups are separated by areas of rippled, bare sand. The sand is not overgrown by microbial mat because the grains are in constant motion by waves and tidal currents. Photo by Stan Awramik.
Credit: Stanley Awramik for GSA Today.
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Related news release: GSA Today science: Biofilms, MISS, and stromatolites