Yorke Peninsula

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Worm (NB; is Not E.laticeps) Edithburgh SA
Worm (NB; is Not E.laticeps) Edithburgh SA
6 comments
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David Muirhead PS:worm's length can be roughly assesses based on the paddleweed(Halophila sp. seagrass) also present....Hmmm...
David Muirhead I've reviewed my comment and now think it's more likely that the worm is in attack mode and not in a struggle to survive against a hidden predator,because these worms are known to often detach their tails (up to about a third of worm's total length according to the books and I've seen an equally long worm drop about a quarter of its tail on a night dive decades ago at Port Stanvac just to south of Adelaide when it was attacked by various reef fish having been highlighted by our dive torches)...
David Muirhead ...(continued)...and the worm in this Edithburgh image appears intact and I would easily have seen any dropped rear segments as the visibility was excellent with little tidal current ,also there were no interested predatory fish species anywhere near the very active worm.So I have decided that the worm had the situation under control,just wish I knew what it was attacking under the substrate or perhaps in a prey species ' den or silty small crevice.My best guess would be one of the many mostly quite small Keeled Octopuses (O.berrima) which are common under this jetty,or maybe one of the bigger octopus species also common there e.g. Maori Octopus.Perhaps the worm was biding time keeping a firm grip on an octopus while waiting for its venom to take effect.
David Muirhead Nothing to add!
Striped Grunter school Wallaroo Jetty YP SA
Striped Grunter school Wallaroo Jetty YP SA

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Pygmy Squid (Sthn) on ascidian siphon Wallaroo Jetty 25-01-201
Pygmy Squid (Sthn) on ascidian siphon Wallaroo Jetty 25-01-201
2 comments
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David Muirhead As I've perhaps noted on ealier image pinnings of this cute cephalopod,Idiosepius notoides is thought to be the world's smallest described species of squid,with adults seldom exceeding about 2.5 cm in total length.
Fanworm @ Edithburg jetty 08-11-2012
Fanworm @ Edithburg jetty 08-11-2012
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Small Stigmatopora narinosa via Port Victoria YP SA 8-01-2013
Small Stigmatopora narinosa via Port Victoria YP SA 8-01-2013

2 comments
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David Muirhead It's probably my imagination but I can almost see a Hairy Pipefish just below the main subject and even a small fish's head with open mouth at bottom edge of image!!??
Pipefish Filicampus tigris False Bay SG SA
Pipefish Filicampus tigris False Bay SG SA
5 comments
Repin Comment
David Muirhead This species is apparently common and has a wide distribution in Australia's warm temperate/subtropical inshore waters eg Sydney Harbour,but the SA population is thought to be confined to upper Spencer Gulf as an isolated relict of the past (normal, cyclically) warmer sea temperature global phases,ie able to hang on during the cooler phases due warmer average water temps in upper Spencer Gulf,due in turn to our two main SA Gulfs being inverse estuaries with little water exchange wrt the Gulfs' southern/lower aspects.
David Muirhead So,here they are not often recorded,but might be becoming more common due anthropogenic global warming (pure speculation by me).
David Muirhead Hmmmm...
David Muirhead Following Graham Short's invaluable assistance in browsing some older slide film images I sent him,I can now say with confidence that this species F.tigris also occurs @ inshore Southern Fleurieu Peninsula on western seaboard thereof.
David Muirhead If I get around to rescanning those slides to higher resolution I'll be able to convince most persons interested in Syngnathids that the above observation is correct.Site:Yankalilla Bay,depths of between 2 and 4 metres.
Pipefish(Tiger; Filicampus tigris) w snout louse, False Bay SA 26-02-2013
Pipefish(Tiger; Filicampus tigris) w snout louse, False Bay SA 26-02-2013
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Tiger Pipefish( Filicampus tigris) subadult26-02-2013 False Bay depth 2.3m Spencer Gulf SA
Tiger Pipefish( Filicampus tigris) subadult26-02-2013 False Bay depth 2.3m Spencer Gulf SA

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Stigmatopora narinosa v Port Victoria SA 28-01-2013
Stigmatopora narinosa v Port Victoria SA 28-01-2013
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Anemones,I.australis (SACReD’s field trip) Marion Bay YP SA15-04-2012 dsm ci1474
Anemones,I.australis (SACReD’s field trip) Marion Bay YP SA15-04-2012 dsm ci1474
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Isanemonia australis pair (SACReD’s Marion Bay field trip) YP SA15-04-2012 dsm ci1415
Isanemonia australis pair (SACReD’s Marion Bay field trip) YP SA15-04-2012 dsm ci1415
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Carijoa sp. soft coral on piling of old Wallaroo Jetty SA (slide img,1970’s) dsm ci13815
Carijoa sp. soft coral on piling of old Wallaroo Jetty SA (slide img,1970’s) dsm ci13815
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Cuttlefish S.apama in Amphibolis seagrass old dsm scan i130067
Cuttlefish S.apama in Amphibolis seagrass old dsm scan i130067
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‘At Troubridge Point the crevices are crammed’ (old SA slide img) dsm i193500
‘At Troubridge Point the crevices are crammed’ (old SA slide img) dsm i193500
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Gulf Pipefish S.narinosa in SA (old l-r slide scan) dsm ci129725
Gulf Pipefish S.narinosa in SA (old l-r slide scan) dsm ci129725
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Deepbody Pipefish (Kaupus sp) Port Broughton jetty SA (old l-res scan) dsm i129731
Deepbody Pipefish (Kaupus sp) Port Broughton jetty SA (old l-res scan) dsm i129731

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S.narinosa @ Port Hughes jetty SA (old l-r scan) dsm ci129741
S.narinosa @ Port Hughes jetty SA (old l-r scan) dsm ci129741
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Microasteroidea on mauve sponge in SA (old slide scan)
Microasteroidea on mauve sponge in SA (old slide scan)
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Algal mix v Marion Bay YP SA 13-04-2012 @depth 2-3m(w unusual ‘spotty’ epiphytes qu.crustose reds or qu. qu.inverts)13-04-2012 dsm i752
Algal mix v Marion Bay YP SA 13-04-2012 @depth 2-3m(w unusual ‘spotty’ epiphytes qu.crustose reds or qu. qu.inverts)13-04-2012 dsm i752
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Sea Sweep 2 Chinaman’s Hat v Marion Bay SA April 2012
Sea Sweep 2 Chinaman’s Hat v Marion Bay SA April 2012
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Short Boarfish Port Giles Jetty YP SA (slide scan circa1980)
Short Boarfish Port Giles Jetty YP SA (slide scan circa1980)
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Seastar (Pseudonepanthia troughtoni) near Troubridge Point, Yorke Peninsula SA (old scan)
Seastar (Pseudonepanthia troughtoni) near Troubridge Point, Yorke Peninsula SA (old scan)
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Red algae on Amphibolis seagrass Chinaman’s Hat Marion Bay SA13-04-2012
Red algae on Amphibolis seagrass Chinaman’s Hat Marion Bay SA13-04-2012
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Ornate Cowfish(male) portrait Point Turton Jetty YP SA (@4m) 16-04-2012
Ornate Cowfish(male) portrait Point Turton Jetty YP SA (@4m) 16-04-2012

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ALGAE BROWN SARGASSUM LACERIFOLIUM VERTICAL FORMAT TROUBRIDGE POINT YP SA 22 4 03
ALGAE BROWN SARGASSUM LACERIFOLIUM VERTICAL FORMAT TROUBRIDGE POINT YP SA 22 4 03
1 comment
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David Muirhead Slide image from April 2003,scanned
Stigmatopora narinosa @ Port Hughes jetty old slide
Stigmatopora narinosa @ Port Hughes jetty old slide
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Sthn Fiddler Ray @ Port Broughton YP SA old slide dpth 0.5m
Sthn Fiddler Ray @ Port Broughton YP SA old slide dpth 0.5m
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Scalyfin, juvenile with P.serenus to left 
@SACReD Chinaman’s12-04-2012
Scalyfin, juvenile with P.serenus to left @SACReD Chinaman’s12-04-2012
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Nudibranch V.verconis on host sponge (SACReD dive)16-04-2012
Nudibranch V.verconis on host sponge (SACReD dive)16-04-2012
1 comment
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David Muirhead Verconia verconis
Chiton (Mollusc=Ischnochiton australis) under rock. Note tiny limpet or similar riding on a lower plate 
(Marion Bay SA)14-04-2012
Chiton (Mollusc=Ischnochiton australis) under rock. Note tiny limpet or similar riding on a lower plate (Marion Bay SA)14-04-2012
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