Carrickalinga

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That same old beach @ Carrickalinga Sthn Fleurieu SA
That same old beach @ Carrickalinga Sthn Fleurieu SA
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David Muirhead Great beach,often listed in Australia's best beaches guides for clear water white sand safe swimming and snorkeling and near the heritage listed Normanville Dunes and about an hour's drive from Adelaide (capital city of South Australia )
Again, not pipies but you gotta look anyway…
Again, not pipies but you gotta look anyway…
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‘Westward Ho’; Ckga Sth Bch
‘Westward Ho’; Ckga Sth Bch

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lance . good info!!
David Muirhead How many times must I say and say with factually accurate passion and desperate desire to educate the public? This beach and this bay (Yankalilla Bay) are right up there with the worlds best biodiversity gems. Truth is,I'm beginning to think,the first casualty of ecological sciences infernally blighted relationship with political figures,policy,critical thinking,and the underwhelmingly overt truism of our time:where there is money to be had,it is never spent on any species...(to be continued..)
David Muirhead ...(cont)..unless it is one the public know about and like e.g. koalas and pandas,is that increasingly uncommon attribute 'Common sense '.Common sense tells us that failure to protect and manage sustainably entire ecosystems is the priority for this time,yet that concept seems yet to be assimilated by the majority of people when looking at whole communities.
David Muirhead If you had trouble deciphering my above two comment posts,please take comfort in knowing that I did too! Having just reread them,I see I was in my self absorbed philosophy zone excessively when I keyed that diatribe. Paraphrased,all I said was that common sense seems less common than the term suggests,and that we need to protect entire ecosystems not only target species. Hardly a novel idea,I'll freely state!
Creation witnessed, vs I forgot to push ‘red eye’ knob
Creation witnessed, vs I forgot to push ‘red eye’ knob
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Micheal . good.
David Muirhead Thanks and I realize viewers may need to use the zoom feature to understand the quirky caption.
Intertidal bliss late on 16 Dec 2013 @ Ckga Bch SA
Intertidal bliss late on 16 Dec 2013 @ Ckga Bch SA
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David Muirhead What more can be said? Experience Carrickalinga,or die incomplete
Carrickalinga SA by snkl; 06-01-2011
Carrickalinga SA by snkl; 06-01-2011
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David Muirhead This image merely exemplifies the usual stuff that awaits even the most timid and novice casual snorkelers throughout much of summer and autumn and indeed often winter but they can be ruined by excess rain related near shore pollutants IE storm water and the accompanying nutrient and suspended sediment loads,anyway in any comparison with other easy access low population low global awareness sub temperate beach entry snorkel sites,this is the one that I always think of first!
David Muirhead Yes I do...
Carrickalinga snorkel,showing shallowest subtidal zone, 27-12-2010
Carrickalinga snorkel,showing shallowest subtidal zone, 27-12-2010
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A weedfish(possibly H.perspicillatus) @Carrickalinga Sthn FP
A weedfish(possibly H.perspicillatus) @Carrickalinga Sthn FP
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David Muirhead Southern Australian Clinidae (weed fish ) are poorly researched to put it mildly.None are considered commercial species and most are small,highly cryptic,and occur in shallow rocky reefs with plenty of cover and despite being mostly very small they are strong swimmers capable of holding position on the rocky benthos even in moderate and high energy sites. Much confusion exists as to whether various forms and color variations represent separate species vs. subspecies or simply sexual dimorphisms together with seasonal enhancements when mating.
Clinid v snkl Carrickalinga SA 03-03-2011
Clinid v snkl Carrickalinga SA 03-03-2011
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David Muirhead Clinics are generally able to turn their heads from side to side by bending at the neck IE anterior or cephalad aspect of the body just behind the opercula.
David Muirhead I'd not realized that this ability is said to be an uncommon attribute in the world of true bony fishes until reading about it's presence in some other unrelated group of fishes. While on topic I will add that one particularly unusual member of the weedy whiting group here in Southern Australia,the Tube Mouth fish,also has this ability. I'll add a comment to the tube mouth image posted elsewhere on this pin board.
Haycock Point Carrickaliga SA 29-12-2010 via snkl
Haycock Point Carrickaliga SA 29-12-2010 via snkl
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Toadies w shrimp@dusk, Carrickalinga SA 09-03-2013
Toadies w [email protected], Carrickalinga SA 09-03-2013
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David Muirhead There were at least 30 smooth toadfish in the one medium size rock pool with limited connection to the open sea via a narrow channel,and they were all desperately queuing (along with a few zebra fish) for cleaning by the in this case seemingly outnumbered rock pool shrimps. z Some images show a shrimp picking food off toadies heads and bodies with the shrimp actually crawling all over the toadies which displayed overt client posturing..A consequence of this must be the assumption that the shrimp are in some way immune to or tolerant of the tetrodotoxin usually present in their skin. However doubt persists in this matter because it is possible that the toadies only get cleaned at times of very low tissue saturation with the toxin,which is known to varie considerably due factors such as age,diet,season,location.
David Muirhead But looking at the bigger picture,it seems probable that the great majority perhaps all fish species require cleaning IE parasite removal and /or removal of skin debris,so puffer fish would be likely to need cleaning just like most other fish,and my images which prove this is done by rock pool shrimp of course do not exclude other cleaner hosts from also getting involved at times,e.g. there are also a few western cleaner cling fish in the same pools.These are known to clean a great variety of other reef fish species including zebbies,dusky morwong,magpie perches,harlequin fish,southern blue devil and many others.
David Muirhead Closely observed a dusky morwong parked at an obvious cleaning station under the Noarlunga jetty just inside the platform reef in six to seven meters depth on a Marine life society of south Australia dive last Saturday and though I expected the cleaner would be a western cleaner clingfish,there were none present and that cleaner host species is almost always readily visible in such cases,so even if it or they are cleaning the other side of the client initially,after a short time they usually come into view for the patient diver,sometimes even abandoning their client and swimming directly towards you in the mistaken belief that you are a very large queue jumper client and thus likely to be a food bonanza! The other main reason they may not be visible at or near the station is if they are cleaning another client first while the next client (in this case it would have been the morwong) is queuing.
David Muirhead Further to above comment: But then after about five minutes I finally saw the cleaner at work and it was (actually there were probably several but I could only be certain of one) a rock pool shrimp Paleamon serenus,aka red-banded shrimp,and it was in full view (finally,because for the first few minutes it had been working out of sight on the other side of the clients body and caudal region and I'm able to be confident about this because the visibility was excellent plus I had been playing my strobes pilot light up and down the quite large client fish and would have noticed even a little shrimp readily,even if it was just resting on the station which was a flat sided low rock surrounded by silty sand)...it was now crawling over the clients caudal peduncle and moving along the upper dorsal body in full view towards the head.Annoyingly for me as soon as I started taking images of the host on the client,the client became nervous and departed the station so that I have only poorly illuminated and rather low quality image evidence of this episode. But it left me in no doubt whatsoever that this shrimp species is a cleaner of dusky morwongs in addition to toadfish and zebbies(and therefore in all probability many other reef fish species)
Spongy scene @ 5m depth, Carrickalinga SA Nov 2013
Spongy scene @ 5m depth, Carrickalinga SA Nov 2013
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David Muirhead This picture is of an unusual color mix:small blue 'blob ' sponges against the predominant yellow species.Taken in a wide rock crevice IE a heavily shaded niche in an area better known for its prolific macro algal scenery.
‘How many shrimps’ve u got tonight’; Carrickalinga SA
‘How many shrimps’ve u got tonight’; Carrickalinga SA
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‘How many roads must a man drive on..’
‘How many roads must a man drive on..’
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How ravens and crows cope with rising seas
How ravens and crows cope with rising seas
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Algal inshore limit @ Carrickalinga Head, SA, 27-12-2010
Algal inshore limit @ Carrickalinga Head, SA, 27-12-2010
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Shrimp’s sudden reversal nr clinid; Carrickalinga SA 04-04-2010
Shrimp’s sudden reversal nr clinid; Carrickalinga SA 04-04-2010
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David Muirhead Now I have noticed what I suspect is a very tiny crab at bottom edge of image (unsharp,so can't be sure but it's got two eyes and carapace),perhaps the fish is going to eat it IE is not really hunting the shrimp?
Clinid,periwinkle and shrimp, Carrickalinga dusk snkl
Clinid,periwinkle and shrimp, Carrickalinga dusk snkl
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Typical sandy-bottomed rock channel littoral @ Carrickalinga SA 27-12-2010
Typical sandy-bottomed rock channel littoral @ Carrickalinga SA 27-12-2010
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No need for fins here; 25-04-2011;clear shallows invite a look; Carrickalinga SA
No need for fins here; 25-04-2011;clear shallows invite a look; Carrickalinga SA
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wanna stay down but I’m only snorkelling…(06-01-2011) Carrickalinga SA
wanna stay down but I’m only snorkelling…(06-01-2011) Carrickalinga SA
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Golden Brown, just like the sun….Carrickalinga snkl 29-12-2010
Golden Brown, just like the sun….Carrickalinga snkl 29-12-2010
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Night snorkel(v.shallow) @Ckga, Sthn Fleurieu, SA14-04-2011
Night snorkel(v.shallow) @Ckga, Sthn Fleurieu, SA14-04-2011
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Typical shallow subtidal brown algal mix on granite outcrops16-01-2012 (snkl@Ckga’s Sth Bch) Yankalilla Bay
Typical shallow subtidal brown algal mix on granite outcrops16-01-2012 ([email protected]’s Sth Bch) Yankalilla Bay

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David Muirhead Now seems as good a time as any to remind viewers that Southern Australia boasts the world's greatest speciation AND endemism for marine algae especially the reds (800 species at least of red algae alone):Dave the underwater photo hobbyist.
‘Into The Blue We Venture,Finless…’;Haycock Point Carrickalinga 25-04-2011
‘Into The Blue We Venture,Finless…’;Haycock Point Carrickalinga 25-04-2011
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Weedfish head shot 14-10-2011 late snkl Carrickaliga Sthn FP SA
Weedfish head shot 14-10-2011 late snkl Carrickaliga Sthn FP SA
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David Muirhead Again probably a Common Weedfish,H.perspicillatus,of which it is thought that several different morphs exist ,but further taxonomic work seems overdue in this fascinating but poorly understood group of inshore fishes in Southern Australia.
David Muirhead As I have probably noted elsewhere on the pin board our weedfishes are mostly found in and near to shallow rocky coast,often preferring the shallowest sub tidal and at least moderately surgy zone and while they are mostly small,even diminutive in comparison with the other main types of rock reef fish common to this terrain such as morwongs ,zebrafish,sweep, drummer and weed whiting,the Clinids are very strong swimmers over the short distances required to run for shelter under large rocks or in ledges with turfing algae,battle for stationary pose during swell sets often in white water,and presumably to enable predation on rockpool shrimp ,small crabs,other small fish,and the like. Several species are also quite often found in tide pools of rock platforms.
Zebrafish juvs,29-10-2012 snkl dusk Haycock Pt Carrickaliga SA
Zebrafish juvs,29-10-2012 snkl dusk Haycock Pt Carrickaliga SA
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Snorkel then scrape,14-04-2011 cobblestone shallows Carrickalinga SA
Snorkel then scrape,14-04-2011 cobblestone shallows Carrickalinga SA
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View westward and upward from depth 40cm (DSM snkl Carrickalinga Bch 21-02-2012
View westward and upward from depth 40cm (DSM snkl Carrickalinga Bch 21-02-2012
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Low tide,clean water,Carrickalinga’s littoral zone 12-10-2010
Low tide,clean water,Carrickalinga’s littoral zone 12-10-2010
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