Stromatolites, Earth's oldest fossils, Hamelinbay, Northwest Australia

archaeological archaeology archeological archeology australia australian bacteria bacteria bacterium bay bays biology bodies body coast coastline coastlines coasts cyanobacteria day daylight daytime during earths exterior exteriors fossil fossilisation fossilization fossils geologic geological geologically geology germs hamelinbay microorganisms nature nobody northwest of oldest outdoor palaeontologic palaeontological palaeontology paleontologic paleontological paleontology photo photos rock rocks sea seaboard seaboards seas seascoast seascoasts seashore seashores sediment sedimentary sedimentation sediments shore shoreline shorelines shores shot shots stromatolite stromatolites the water waters