Interactions Between Common Weedfish, Heteroclinus perspicillatus, and Rockpool Shrimp, Palaemon serenus

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In 2011, this Common Weedfish, Heteroclinus perspicillatus, was stalking a Rockpool shrimp, Palaemon serenus, which it later consumed. (As posted at https://inaturalist.ala.org.au/observations/10002537#activity_comment_948643c9-28f5-4479-b730-e7f9dd2e9a28 ) Both these weedfishes and shrimps are very common in these particular tide pools and channels at Haycock Point, Carrickalinga. The weedfishes and shrimps often appear at peace […]

Nature Glenelg Trust’s involvement in researching and monitoring Goolwa pipi population dynamics

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The Nature Glenelg Trust (NGT) has been involved in researching and monitoring Goolwa pipi (cockles) population dynamics and associated aspects e.g. recreational pipi extraction impacts. Open season is currently November to May, with a maximum daily bag limit of 300 cockles daily per person. There is also a minimum size […]

Recreational Fishing’s Possible Impact On Wrasses That Have Historically Helped To Limit Sea Urchin Densities

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Canopy algae are a major component of Blue Carbon fixation. Whilst diving at The Bluff (Rosetta Head) on 27th October 2022, I found this Western Pacific Purple Sea Urchin, Heliocidaris erythrogramma: – I have posted it on iNaturalist, along with the following details, at https://inaturalist.ala.org.au/observations/140727962 . Overall, I saw relatively […]

Habitat loss, habitat degradation and the Port River dolphins

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I see similarities between the recent and seemingly quite rapidly escalating decline in Port River dolphin numbers and the continuing extinction trend in the bushland birds of Adelaide and the Mount Lofty Ranges. Ornithologists have been saying for decades that the many smaller, specialised birds (such as robins, flycatchers, tree-creepers […]

Smith Bay, Kangaroo Island Deepwater Port revised proposal: MLSSA Inc Position Statement

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Dear Sir/Madam/Staff Concerned, I, as Secretary of the Marine Life Society of South Australia Inc. (hereafter MLSSA Inc) ,with the President and Committee’s unanimous support, do hereby provide our position statement concerning KIPT’s Smith Bay K.I proposal for a deep water port facility. MLSSA Inc, as the only incorporated  not-for-profit […]

Bridled leatherjackets and Toothbrush leatherjackets

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This photo was taken at Rapid Bay between the old and new jetties: The fish in the background, behind the adult Castelnau’s (aka Pretty polly) wrasse, is an older, juvenile Bridled leatherjacket. The leatherjacket is over a seagrass meadow, predominantly Amphibolis (aka ‘wireweed’).   The Bridled leatherjacket is one of our […]