The Occurrence of the Venus shell, Tapes literatus, in the Port River

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Last year, I found a Venus shell, Tapes literatus at the Ships’ Graveyard in the North Arm of the Port River. I reported the discovery in my article entitled Further Discoveries at the Ships’ Graveyard. More recently, two more specimens were found on the western side of Torrens Island (8 October […]

Bolinopsis, Port Bonython 2017 - Dan Monceaux

The comb jellies Bolinopsis and Mnemiopsis

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I took this ‘one off’ shot of a clear jelly during my dive at Moonta Bay jetty in June 2017. While the photograph is enigmatic, my observations were sufficient for me to pursue a positive identification of the species. It turned out to be a comb jelly, and my interest […]

European shore crab (Carcinus maenus) at Marino Rocks - Dan Monceaux 2015

Invasive marine species in South Australia

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Since first learning about marine biosecurity and the translocation of marine species from one region’s waters to another via commercial shipping and recreational boating, I’ve come to recognise a few of our locally found invasive species. This summer I’ve added another invasive species to the list of alien organisms I’ve found while […]

Buried Shovelnosed ray, Glenelg by Dan Monceaux MLSSA

Nocturnal observations around Glenelg marina and jetty

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While this weekend’s scorching hot temperatures kept my wife and I out of the sun for the most part, we couldn’t resist making a late night beach walk down at Glenelg. While the habitats there are highly modified due to breakwater and marina construction, dune removal for coastal development plus […]

Whyalla Underwater Shootout a resounding success

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The inaugural Whyalla Underwater Shootout held over the long weekend from June 7-9th was a resounding success, according to its organisers. The competition, which was hosted by the Marine Life Society of South Australia attracted 96 entries from eleven photographers from around the state. Facing the chilly waters of Upper Spencer […]

European fan worm

Sabellid Worm Discovered at Port Noarlunga

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Mary Anne Stacy of the Port Noarlunga Aquatics Centre recently discovered an unusual fan worm on a pylon of the Port Noarlunga Jetty. Suspecting it to be a Sabella worm (a species introduced from European waters in ships’ ballast) Mary Anne organised for it to be identified. Her fears proved […]

European fan worm

The European Featherduster Worm (Sabella spallanzani)

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South Australian divers may have heard a little bit about the introduction of exotic species into Australian waters. It is said to be an increasing problem but we do not see much evidence of it in SA waters. Fortunately, we have not yet seen anything of the large Northern Pacific […]