Juvenile via swalkel (fin-less snorkel) at twilight,Haycock Point channel on v high tide.
[Final photo shows site pre-entry,and 2nd to last photo gives perspective to the small size of the subject by including a Western Jumping Blenny in far R of frame]
Fully marine environment noted.

Tentative ID but there were thousands seen on the one shallow snorkel.
Many small rocks had 10 or more beneath them,as in pic.(I turned that rock for photo only).
Whatever taxon they are,I doubt they often build up to such huge populations naturally at a given site,so maybe they are a local 'canary in the copper mine'??(pardon my pun,I've no beef with the Copper Coast's rich history!)

4 old slide scans of an adult in a Posidonia seagrass outlier in only ~1-1.5m depth , seen just before I stood up to exit following a scuba dive here @ 'Syngnathid Hotspot' near jetty and out from SLSC.

An unusual, interesting groundcover plant growing well in harsh dry saline rocky limestone and sandstone soill near the marine swim pool at Port Wakefield.Samphires and many associated chenopods dominate this low open brackish coastal heath type plant community while mangroves can be seen about 500 m away on either side and further to the south.Feasibly a weed but probably a native local plant.(Note:in the 1st pic there is one 'imposter' flower, of Frankenia pauciflora, on far RHS, but the vast majority of the flowers in the image are representative of ( part of) the subject plant.

Emus drinking from.a kerbside puddle outside Exmouth Diving Centre.One adult with 3 young ones,and several of those also lowered themselves flat onto the puddle to cool off or wash their belly feathers.So cute.

This is a local native, I'm fairly sure. I've submitted photos of this taxon before, but I have forgotten the name. It's more common as a weakly climbing and often sprawling or rambling grassy plant in the shaded understory where the Pinus radiata plantation persists around the wider perimeter of the Yankalilla Cemetery.

Introduced (feral) bee raids nectar evolved for local insects.The basal leaf gland it is drinking from is on a Notable Wattle (Acacia notabilis) which is one of many spectacularly ornamental local native wattle species.(Wattle flowers offer only pollen,but that does not mean wattles produce no nectar!)

I like this pic but won't attempt genus or species ID,given the reality that the times are changing...blah...and how would I know if it is juvenile or adult? (..and so on he goes....Cheers, AND that's from Ad Nauseam Dave!)

The closest I could find to this moth seems to be Dichromodes estigmaria, although that species doesn't seem to have been observed in South Australia (at least on iNat, ALA and lepidoptera.butterflyhouse). This specimen also lacks the two black markings along the costa of each forewing so I am not certain of the ID. Any help much appreciated!

Images sourced from previous submission but now the Subject=the toadie not the whiting.

[And I note that a second Smooth Toadfish is incidentally visible in bottom L corner in at least one image version,but appears un-involved in the possible cleaning episode involving the mid-frame Smooth Toadfish]

Personal Opinion only:- the puffer and the whiting are both clients or prospective clients of one or more Rockpool Shrimp ,which are using the low rock as a station.

The general appearance suggests some sort of crab, but that's not quite right (I don't think).
Image #1 & #2 are top and bottom views respectively. Image #3 is an attempt to show its tail ... otherwise wrapped tighly against the body.
Image #4 highlights interesting hooks on what I think are its rear legs.

Mullaquana Road intersection. Veg association dominated by Tecticornia pruinosa, hemichroa sp, Disphyma. Some bushes of T disarticulata up to 0.5m tall

Adding more photos taken in the lab back in St Kilda, from the photographed plant, which was vouchered and provided to the Adelaide Herbarium. The Atlas of Living Australia listing for the voucher is "Occurrence record: SA Flora (BDBSA) - OPP741480-1-PENDING"

On Heath Road, Kyancutta. Associated vegetation includes Acacia sp, rosy bluebush, Threlkeldia, Enchylaena tomentosa, and Sclerolaena sp.

Adding more photos taken in the lab back in St Kilda, from the photographed plant, which was vouchered and provided to the Adelaide Herbarium, who have uploaded the voucher details to ALA as "Occurrence record: SA Flora (BDBSA) - OPP741477-1-PENDING"