Monitoring of the Shallowest Parts of the Great Southern Reef is a High Priority
On 17th December 2023, the sea was flat calm. There was no wind, and partial to full sun, so water close to shore was surprisingly warm for the time of…
The Little Pink Urchin, Amblypneustes elevatus
On 17th December 2023, I found this Little Pink Urchin, Amblypneustes elevatus at Lady Bay, Normanville in the shallowest subtidal at low tide at 2:09 pm. I have posted details…
Unusual Body Bar Patterns Observed On Zebra Fish, Girella zebra
Here is a photo of a school of Zebra Fish, Girella zebra at ‘Kaurna Pool’ (at Lady Bay, Normanville) during a snorkel that I did there on 11th December 2022:…
What is the Future Sustainability of Cephalopod Stocks?
Following on from the presentation by some of our members at our September meeting, I thought this whole concept of ‘small group’ members presentations/discussions on current topics of interest was…
Giant Chiton, Plaxiphora albida, sightings at Fishery Beach
I posted details on iNaturalist regarding my sighting of what appeared to be Giant Chitons, Plaxiphora albida at Fishery Beach on 15th September 2023. “These were quite common on this…
Possible Shifts in the Ranges of Numerous Temperate Southern Australian Inshore Reef Fish Species
Further sightings of the Western Crested Morwong at Port Noarlunga is a good summary of what we have learned about the Western Crested Morwong’s presence in SA. Interesting that, as…
Interactions Between Common Weedfish, Heteroclinus perspicillatus, and Rockpool Shrimp, Palaemon serenus
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…
Nature Glenelg Trust’s involvement in researching and monitoring Goolwa pipi population dynamics
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…
The Great Spider Crab Aggregation at Rapid Bay
Whilst diving at the old Rapid Bay Jetty on 25th October I saw the first decent aggregation of the Great Spider Crab, Leptomithrax gaimardii that I’ve seen for some years…
Recreational Fishing’s Possible Impact On Wrasses That Have Historically Helped To Limit Sea Urchin Densities
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…