From Stromatolites to Microbialites

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From Stromatolites to Microbialites by Steve Reynolds During Ian Lewis’ talk about cave diving around Mount Gambier at the SDFSA’s Splash Inn event during SA Scuba Week, he mentioned the occurrence of stromatolites in the Blue Lake. This reminded me about the article Report on the Blue Lake Sediment Sampling […]

Species sighted at Witton Bluff & Christies Reef

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Species sighted at Witton Bluff & Christies Reef by Steve Reynolds As reported in My Early Diving Days , Witton Bluff is the high point on the coast between Port Noarlunga and Christies Beach. It is named after the 1839 wreck of the David Witton. I did my first sea snorkel there […]

Rhodoliths

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As divers, we see all different kinds of marine algae underwater, but identifying the species can be tricky for most of us. There are greens, browns, reds and even blue-greens. Then there are Dinoflagellates (Division Dinophyta) and different seagrasses (Angiosperms). Algae at Rapid Bay jetty March 2017 (Taken by Steve […]