Feb 23

February 23, 2017

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ID of pipefish found at Sellicks Beach

We recently received a request via Facebook from Robbert Alexander‎ to identify a pipefish species that he found on Sellicks Beach. Robbert sent us a photo of the pipefish and we told him that it was “Most likely Stigmatopora argus, the spotted pipefish”. We also gave him a link to the relevant web page for the Australian Museum ( https://australianmuseum.net.au/spotted-pipefish-stigmatopora-argus ).   Robbert agreed with our ID of the pipefish and then sent us several more photos of it. He…

Posted in Bony fishes, Coastal species, Syngnathids | By

Feb 22

February 22, 2017

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The Taking of Wide-angle photos 1/2 Above Water and 1/2 Below Water

When David Muirhead sent some wide-angle photos 1/2 above water and 1/2 below water to  Scoresby Shepherd (incl. the above image), he received this response from him: – “I’ve always been enchanted by these strange pics – 1/2 above water and 1/2 below. I’ve no idea what sort of lens can do it!”   David Muirhead diving with camera in hand (Taken by Steve Reynolds) David sent Scoresby the following explanation: –  “For in- water use you need a combination…

Posted in Equipment, Underwater Photography | By

Feb 18

February 18, 2017

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A Few Finds From Around Coffin Bay

Herewith a few finds, most made recently near (the) home (of Brian and Bernadette Saunders of Coffin Bay) : Eggs sacs like balloons on strings, their sandy stalks attached below the sand’s surface. We had previously found larval sea snails in similar egg sacs but these were a little smaller (about 20 mm in length) so we opened one and extracted a larva. The microscope showed a little creature (less than 1 mm long) with red eyes and several pairs…

Posted in Coastal species, intertidal zone, Shorebirds | By

Feb 3

February 3, 2017

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Swimming with Surf Sardines at Myponga Beach

by David Muirhead I snorkelled at Myponga Beach’s south-western rock channels again this morning (29th Jan 2017) with my daughter who expressed interest in accompanying me because she’s never been in the water there. (No suits, just bathers, booties, fins, hood, mask, snorkel, SPF30+ and Sea Life camera.) The water was clear for a change (it’s been a wet, wild warm season). Bit surgier than same time yesterday morning (tide still well in but ebbing both days, with entries around 1030 a.m.) Today’s…

Posted in Bony fishes, Coastal species | By

Jan 17

January 17, 2017

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Reef Watch turns 20 – monitoring dives planned

Reef Watch is celebrating its 20th anniversary this year. They are inviting divers to take part in monitoring dives: – “Never dived with Reef Watch before and unsure about what we do? Come along for a few dives and learn how to ID our wonderful marine animals and how you can help us with simple diving surveys. Reef Watch dives and training is free (but sorry, we can’t teach you how to dive). Here are some dates of the next…

Posted in Achievements, Citizen Science, Events | By

Jan 11

January 11, 2017

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THE FIRST RECORDED DIVING FATALITY IN SOUTH AUSTRALIAN WATERS

According to “A Listing and Analysis of Fatal Diving Accidents in South Australia” by Peter Horne, the first recorded diving fatality in South Australian waters occurred on 28th December 1951. The incident was recently recounted in The Advertiser on 26th December 2016. A scan of the Boomer article in The Advertiser 26/12/16 The “Boomer” section of The Advertiser on Boxing Day featured a part of a report (said to be from 3rd January 1952) which stated that 33-year old wharf…

Posted in Uncategorized | By

Dec 14

December 14, 2016

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Acorn worm’s ‘Wolverine’ style healing powers

According to a recent report in the Sunday Mail (4/12/16), acorn worms can apparently regrow any of their body parts from nothing. The report was written by Harry Pettit from Washington, USA. He says that “researchers hope that unravelling the worm’s DNA could lead the team to human limb regeneration”. The researchers involved are from the University of Washington and they are trying to open full limb regeneration in humans. The acorn worm apparently has a genetic makeup like that…

Posted in Marine invertebrates, Research, Worms | By

Dec 13

December 13, 2016

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The Upside-down Jellyfish, Cassiopea ndrosia

The last thing that I expected to be doing on the first days of my recent retirement from work was studying jellyfish, but that’s exactly what happened! That’s just the way that things go sometimes. It all started over the Queen’s Birthday holiday long weekend last June though, as far as I can determine. That was the weekend that I decided to go kayaking alone at Garden Island. I think that I noticed an upside-down jellyfish in the shallow water…

Posted in Cnidaria, Marine invertebrates | By

Dec 8

December 8, 2016

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The unveiling of Reg Sprigg’s dive chamber at the Patawalonga, Glenelg North, SA

A long list of lucky events led to me attending the recent unveiling of Reg Sprigg’s dive chamber at Glenelg North (with my wife Noeleen). The dive chamber has been positioned adjacent to the Buffalo replica on the banks of the Patawalonga. Our Patron, Scoresby Shepherd had suggested that I try to get approval to attend the official unveiling. An email request to a namesake sealed the deal for Noeleen & I to attend the event. A good crowd had…

Posted in Equipment, Events, Maritime History | By

Nov 27

November 27, 2016

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The Predatory Behaviour of an Eleven-armed Star Fish

During our recent dive at Rapid Bay jetties, I recorded a large eleven-armed star fish attacking an abalone. I have to admit that I set the whole thing up though. I was swimming along the side of the new jetty’s piles when I came across this abalone at the base of a jetty pile. It was attached to a small plate-like rock: – On the other side of the jetty pile was this eleven-armed star fish: – I evilly-decided to…

Posted in Marine invertebrates, Molluscs, Seastars | By