Photos / Sounds

What

Rough Bullseye (Pempheris klunzingeri)

Observer

davemmdave

Date

January 10, 2024 02:24 PM ACDT

Description

For those who have read the Notes in my preceding observation of the juvenile Dusky Morwong, these Bullseyes (not a target species) were photographed as near as I can tell to the exact line on the map that marks the southern (SW more specifically) limit of the disappointingly tiny "No Spearfishing " area for this iconic little coastal enclave.
(Declaration of personal interest:-I started my 6 decades of exploring SA marine life as an amateur spearo under age 10 years. Like many of my generation, I soon moved on. But I still recall the stark fact that after our small group of teenage snorkellers had hammered our favourite shore access Spearfishing sites (not Second Valley, but nearby eg Normanville, Carrickalinga and Willunga) each summer school break, after even a few days of intensive forays early each warm season, our favourite spots became virtual deserts. The hapless 'sitting duck ' species we were spearing seemed to vanish for some months. But next summer we would repeat the slaughter,with the same outcome. The key factors that made this phase of our lives blissfully brief- less than a decade- were that we were able at age 16 to do entry level scuba training, and the fact that underwater cameras had just become widely available (and affordable for most),notably the Nikonos series.
Not forgetting that in SA (and most other States I think) it was already illegal to spear anything while using SCUBA or hookah equipment.
Now that was a great example of timely and progressive legislation, if ever there was one.
Not that I have become cynical with age...).

Rough Bullseye - Photo (c) Erik Schlogl, some rights reserved (CC BY-NC), uploaded by Erik Schlogl
steve_reynolds's ID: Rough Bullseye (Pempheris klunzingeri)
Added on February 2, 2024
Supporting

Photos / Sounds

What

Zebrafish (Girella zebra)

Observer

davemmdave

Date

October 11, 2010 06:51 PM ACDT

Description

Snorkel in Kaurna pool Lady Bay platform reef some months after dreadful black silt catchment outflows temporarily blanketed most of littoral zone in this lower energy corner of Yankalilla Bay
Depth half a metre or so
(Makes me wonder why the black headed zebrafish adult variants became evident around that time ,after I'd never seen anything like it for preceding half decade ,approx.)

Zebrafish - Photo (c) David Spencer Muirhead, some rights reserved (CC BY-NC), uploaded by David Spencer Muirhead
steve_reynolds's ID: Zebrafish (Girella zebra)
Added on February 1, 2024
Supporting

Photos / Sounds

What

Sixspine Leatherjacket (Meuschenia freycineti)

Observer

davemmdave

Date

March 3, 2023 05:11 PM ACDT

Description

Adult pair at T-junction.

Tags

dsm
Sixspine Leatherjacket - Photo (c) J. Martin Crossley, some rights reserved (CC BY-NC-SA), uploaded by J. Martin Crossley
steve_reynolds's ID: Sixspine Leatherjacket (Meuschenia freycineti)
Added on February 1, 2024
Supporting

Photos / Sounds

What

Pencil Weed Whiting (Sheardichthys beddomei)

Observer

davemmdave

Date

January 15, 2024 04:54 PM ACDT

Description

Cropped and heavily cropped versions of this photo, originally posted with the leatherjacket as subject (Toothbrush I think).Now the subject is the few pencil weed whiting (which appear adult rather than juvenile),several being close to the leatherjacket (which I recall was almost stationary).And one on the R is probably actually cleaning the Leatherjacket, best seen at centre in 2nd image.

Pencil Weed Whiting - Photo (c) Dr Elodie Camprasse, all rights reserved, uploaded by Dr Elodie Camprasse
steve_reynolds's ID: Pencil Weed Whiting (Sheardichthys beddomei)
Added on February 1, 2024
Supporting

Photos / Sounds

What

Pencil Weed Whiting (Sheardichthys beddomei)

Observer

davemmdave

Date

January 15, 2024 04:54 PM ACDT

Description

I've just noticed that this Castelnau's Wrasse which was the Subject of an earlier submission from this dive is being cleaned by a young Pencil Weed-Whiting. So, the head up bobbing posture so often associated with this Wrasse species is also used as a client posture during cleaning. (Juvenile Pencil Weed Whiting are known facultative cleaner hosts, but are harder to capture in the act than eg Western Cleaner Clingfish which are effectively full time hosts, as far as is known).

Pencil Weed Whiting - Photo (c) Dr Elodie Camprasse, all rights reserved, uploaded by Dr Elodie Camprasse
steve_reynolds's ID: Pencil Weed Whiting (Sheardichthys beddomei)
Added on January 22, 2024
Supporting

Photos / Sounds

What

Western Cleaner Clingfish (Cochleoceps bicolor)

Observer

davemmdave

Date

January 15, 2024 05:04 PM ACDT

Description

Image 2 was used in my preceding observation but SUBJECT now is the little fish on the sea tulip at upper R. I've added a cropped version for Image 1.

Western Cleaner Clingfish - Photo (c) Glen Whisson, some rights reserved (CC BY-NC), uploaded by Glen Whisson
steve_reynolds's ID: Western Cleaner Clingfish (Cochleoceps bicolor)
Added on January 22, 2024
Supporting

Photos / Sounds

What

Horseshoe Leatherjacket (Meuschenia hippocrepis)

Observer

davemmdave

Date

January 15, 2024 05:32 PM ACDT

Description

This leatherjacket convinced me that it was actually eating bits of the jellyfish (an Australian Sea Nettle which are currently very common here),although I admit that I can't be certain. Another possibility could be that by disabling the jellyfish, any juvenile trevallies would be vulnerable to predation, because they would face a long swim in open water to find another intact Australian Sea Nettle (, despite this jellyfish being common distances between individuals on this dive was still many, many metres).

Horseshoe Leatherjacket - Photo (c) J. Martin Crossley, some rights reserved (CC BY-NC-SA), uploaded by J. Martin Crossley
steve_reynolds's ID: Horseshoe Leatherjacket (Meuschenia hippocrepis)
Added on January 18, 2024
Supporting

Photos / Sounds

What

Mosaic Leatherjacket (Eubalichthys mosaicus)

Observer

davemmdave

Date

January 15, 2024 05:04 PM ACDT

Description

Note the Western Cleaner Clingfish on the sea tulip at upper R. This is another typical cleaning services host client interface, but my presence has probably interrupted proceedings.

[As is often the case when any diver, knowingly or unknowingly, gets too close to a cleaning station. The 2 most frequently observed consequences are #1: the current or prospective client(s) back off, fearing predation, and perhaps accepting the likelihood that a much larger prospective client hovering nearby is more appealing to the host cf #2.

2: The host abandons the current client, even though that fish still has parasites requiring removal, and swims actively towards the bigger "fish aka diver"-sometimes latching directly onto camera, face mask or other external surfaces including neoprene and exposed skin.

We believe that in such cases the Western Cleaner Clingfish thinks such a large client must have more parasites etc ie is a better food source.Until its investigated, and learns otherwise.
Anecdotally I think that at places like Rapid Bay jetty, where divers have become so numerous as to be ubiquitous, WCCs are less likely to allow divers to jump a client queue. They have learned that with divers size doesn't equate with more food, so they don't bother checking us out.
Perhaps they have plans B and C?
Plan B= leave their station and follow an existing client a short distance to where the client has retreated, to continue where it left off.
Plan C=wait impatiently for diver to move on, so the WCC can resume normal services.
(And I could speculate on a Plan D,etc, but enough is enough!)]

Mosaic Leatherjacket - Photo (c) Erik Schlogl, some rights reserved (CC BY-NC), uploaded by Erik Schlogl
steve_reynolds's ID: Mosaic Leatherjacket (Eubalichthys mosaicus)
Added on January 18, 2024
Supporting

Photos / Sounds

What

Scalyfin (Parma victoriae)

Observer

davemmdave

Date

January 15, 2024 06:07 PM ACDT

Description

I don't often see juvenile Scalyfin in cup sponges, FWIW.
And on close zooming I think there's a (probably also juvenile) Western Cleaner Clingfish at the scalyfin's gill slit.
Makes sense, as Scalyfin adults are known to use the services of WCCs, so juveniles would surely need the same.

Scalyfin - Photo (c) Nigel Marsh, some rights reserved (CC BY-NC), uploaded by Nigel Marsh
steve_reynolds's ID: Scalyfin (Parma victoriae)
Added on January 18, 2024
Supporting

Photos / Sounds

What

Moonlighter (Tilodon sexfasciatus)

Observer

davemmdave

Date

December 28, 2023 02:08 PM ACDT

Description

Older juvenile near centre ,heading towards a Silver Drummer and a Sea Sweep,and there's a small female Brownspotted Wrasse not far beyond the Moonlighter. Feasibly a host client cleaning interaction; not that convincing but I am adding it to the Temperate Marine Cleaner project. It may be worth noting that we saw reasonable numbers of older juvenile or adolescent Moonlighters on this snorkel close to the cliffs, but very few decent sized adults. Since we were in about the middle of the shoreline section of this Green Sanctuary Zone, there should be no shortage of mature adults. So perhaps the cliffs base nooks and crannies encourage the younger Moonlighters to provide cleaning services there, especially towards low tide, while the full adults spend more time on the offshore reefs at such times? Pure speculation, hmm...🫢.

Tags

dsm
Moonlighter - Photo (c) J. Martin Crossley, some rights reserved (CC BY-NC-SA), uploaded by J. Martin Crossley
steve_reynolds's ID: Moonlighter (Tilodon sexfasciatus)
Added on December 31, 2023
Supporting

Photos / Sounds

Observer

davemmdave

Date

December 17, 2023 02:09 PM ACDT

Description

As found in shallowest subtidal at low tide.
Note:-Flat calm, no wind, partial to full sun,so water close to shore was surprisingly warm for time of year. I didn't feel cold even after almost 3 hours in the water and I wore only a 2mm wetsuit. I saw no dead or overtly heat stressed motile lifeforms.
But I suspect that if there'd been a dodge tide (prolonged lack of tidal exchange akin to " missing a tide",being a phenomenon essentially unique to SA's main gulfs),many of the shallowest subtidal and intertidal lifeforms would have suffered severely. This is known to occur occasionally on dodge tides during any warm season, and until recently acute dieoffs of littoral zone reef lifeforms during dodge tides were considered natural phenomena. However, climate change will surely exacerbate the number and severity of such events.
Also worth noting is the trend in SA and other parts of southern Australia towards increased 'monsoonal ' warm season rainfall.(Along with lower cool season rainfall: average annual rainfall in SA is expected to decrease slightly, but the % occurring in the warm season will increase considerably, according to meteorological forecasts. The rapidity of these changes means they are largely anthropogenic.)
So, inevitably we will experience dodge tides (normal) coinciding with abnormally big summer rain events.
This warm season trend (combinations of lower salinity due dilution via catchment outflows with higher water temperatures ( without even mentioning anthropogenic nutrient excess!) means that catastrophic die-offs on intertidal and shallow subtidal reefs in the upper to mid Gulfs will become more frequent.
So monitoring of the shallowest parts of the Great Southern Reef is a high priority.
Currently in SA most of the modest funding available for monitoring and protecting coastal ecosystems focuses on seagrass retention, restoration of shellfish reefs,mitigation of beach sand loss, and maintenance of commercially important fish stocks.All hugely important facets, but not yet a holistic approach.
Whew, that is enough from the pessimistic side of this ecodiver 🫢.

Little Pink Urchin - Photo (c) tangatawhenua, some rights reserved (CC BY-NC), uploaded by tangatawhenua
steve_reynolds's ID: Little Pink Urchin (Amblypneustes elevatus)
Added on December 20, 2023
Supporting

Photos / Sounds

What

Cobbler Wobbegong (Sutorectus tentaculatus)

Observer

davemmdave

Date

December 6, 2023 06:52 AM ACDT

Description

Freshly beach washed on receding early morning tide. Still alive with intermittent symmetrical gasps (gills open and close several times in 1-2 seconds then no sign of life for 2-5 seconds). Arched body sideways when 1st touched with tip of a boot then no further overt response to touch.
About 56cm TL.
I returned it to the water as carefully as possible and it appeared to show some recovery within 15-30 seconds, eventually swimming a few metres, right way up. But I don't think it will survive, based on the unknown reason(s) for its being weakened to the point of stranding. Its now nearly a week since the last decent local rain event, which did open the mouths of the local estuaries including the Bungala River and Carrickalinga Creek, so it may have suffered from the dilutional or other effects of these point source discharges. It doesn't look emaciated eg from certain types of internal parasites, and has no external evidence of traumatic injury, certainly no penetrative wounds.

Cobbler Wobbegong - Photo (c) Sebastien Landat, all rights reserved, uploaded by Sebastien Landat
steve_reynolds's ID: Cobbler Wobbegong (Sutorectus tentaculatus)
Added on December 10, 2023
Supporting

Photos / Sounds

What

Rough Leatherjacket (Scobinichthys granulatus)

Observer

davemmdave

Date

February 14, 1998

Description

Old low resolution slide scan,location probably accurate but date very approximate and needs checking in my old dive logs asap:)

Rough Leatherjacket - Photo (c) Richard Ling, some rights reserved (CC BY-NC-ND)
steve_reynolds's ID: Rough Leatherjacket (Scobinichthys granulatus)
Added on December 3, 2023
Supporting

Photos / Sounds

What

Rough Leatherjacket (Scobinichthys granulatus)

Observer

davemmdave

Date

November 19, 2023 11:55 AM ACDT

Description

Single adult with 3 small adult Mosaic Leatherjackets alongside the old jetty.

Rough Leatherjacket - Photo (c) Richard Ling, some rights reserved (CC BY-NC-ND)
steve_reynolds's ID: Rough Leatherjacket (Scobinichthys granulatus)
Added on December 3, 2023
Supporting

Photos / Sounds

What

Smooth Toadfish (Tetractenos glaber)

Observer

davemmdave

Date

December 30, 2021 05:53 PM ACDT

Description

One of many juveniles seen this snorkel. No adults seen.

Smooth Toadfish - Photo (c) Sascha Schulz, some rights reserved (CC BY-NC), uploaded by Sascha Schulz
steve_reynolds's ID: Smooth Toadfish (Tetractenos glaber)
Added on November 26, 2023
Supporting

Photos / Sounds

What

Smooth Toadfish (Tetractenos glaber)

Observer

davemmdave

Date

November 22, 2021 02:39 PM ACDT

Description

With a Striped Sea Louse male on mouth. This was one of many adult smooth toadies seen on this shallow intertidal and subtidal snorkel(in image 2 a second one is almost fully buried in lower frame),but was the only one with a visible parasite externally.

Smooth Toadfish - Photo (c) Sascha Schulz, some rights reserved (CC BY-NC), uploaded by Sascha Schulz
steve_reynolds's ID: Smooth Toadfish (Tetractenos glaber)
Added on November 26, 2023
Supporting

Photos / Sounds

What

Western Blue Groper (Achoerodus gouldii)

Observer

davemmdave

Date

April 30, 2006

Description

Old low resolution slide scan from Groper Bay Flinders Island South Australia. Date approximate only. A relatively young male, I think.

Western Blue Groper - Photo (c) leucopogon, some rights reserved (CC BY-NC)
steve_reynolds's ID: Western Blue Groper (Achoerodus gouldii)
Added on November 26, 2023
Supporting

Photos / Sounds

What

Banded Morwong (Chirodactylus spectabilis)

Observer

davemmdave

Date

November 5, 2023 11:35 AM ACDT

Description

Smallish adult (estimated TL 40cm), at 8 to 8.5m at the T Junction. Quite inquisitive but also suitably wary; would flee whenever I turned towards it with camera. If I've ever seen adults or juveniles here before, I don't remember, but I definitely wasn't able to get images, or I'd certainly have posted those here.
Otherwise, I have only ever seen adults (one or two) off KI's NW coast.
And small juveniles at the Salmon Hole Beachport.

NB: Perhaps the species is moving into upper GSV, perhaps it's just a vagrant, or perhaps it's been established here long-term i.e. at extreme edge of range.

Tags

dsm
Banded Morwong - Photo (c) lcolmer, some rights reserved (CC BY-NC), uploaded by lcolmer
steve_reynolds's ID: Banded Morwong (Chirodactylus spectabilis)
Added on November 17, 2023
Supporting

Photos / Sounds

What

Wakame (Undaria pinnatifida)

Observer

davemmdave

Date

November 25, 2019 06:56 PM ACDT

Description

Growing along edge of pontoon in fully marine habitat.

Wakame - Photo (c) Lloyd Esler, some rights reserved (CC BY-NC), uploaded by Lloyd Esler
steve_reynolds's ID: Wakame (Undaria pinnatifida)
Added on November 1, 2023
Supporting

Photos / Sounds

What

White-bellied Sea-Eagle (Icthyophaga leucogaster)

Observer

debeliz

Date

May 2022
White-bellied Sea-Eagle - Photo (c) Allan Lugg, some rights reserved (CC BY-NC), uploaded by Allan Lugg
steve_reynolds's ID: White-bellied Sea-Eagle (Icthyophaga leucogaster)
Added on October 29, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

New Zealand Fur Seal (Arctocephalus forsteri)

Observer

davemmdave

Date

October 22, 2023 12:56 PM ACDT

Tags

dsm
New Zealand Fur Seal - Photo (c) goodonya, all rights reserved, uploaded by goodonya
steve_reynolds's ID: New Zealand Fur Seal (Arctocephalus forsteri)
Added on October 29, 2023
Supporting

Photos / Sounds

What

Australian Giant Cuttlefish (Ascarosepion apama)

Observer

davemmdave

Date

February 27, 2023 01:54 PM ACDT

Description

Juvenile (with a Whitespotted Anglerfish which is the subject of an earlier submission from same dive).

Tags

dsm
Australian Giant Cuttlefish - Photo (c) John Turnbull, some rights reserved (CC BY-NC-SA)
steve_reynolds's ID: Australian Giant Cuttlefish (Ascarosepion apama)
Added on October 5, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Australian Giant Cuttlefish (Ascarosepion apama)

Observer

davemmdave

Date

April 27, 2019 10:48 AM ACST

Description

Beach washed cuttlebone.

Australian Giant Cuttlefish - Photo (c) John Turnbull, some rights reserved (CC BY-NC-SA)
steve_reynolds's ID: Australian Giant Cuttlefish (Ascarosepion apama)
Added on October 5, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Australian Giant Cuttlefish (Ascarosepion apama)

Date

July 15, 2021
Australian Giant Cuttlefish - Photo (c) John Turnbull, some rights reserved (CC BY-NC-SA)
steve_reynolds's ID: Australian Giant Cuttlefish (Ascarosepion apama)
Added on October 5, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Dragonet (Bovichtus angustifrons)

Observer

davemmdave

Date

September 24, 2023 03:36 PM ACST

Description

Juv western talmas w dragonet at outer end of the jetty. (Cropped version).

Dragonet - Photo (c) tarnh, some rights reserved (CC BY-NC), uploaded by tarnh
steve_reynolds's ID: Dragonet (Bovichtus angustifrons)
Added on October 5, 2023
Supporting

Photos / Sounds

What

Tasselled Anglerfish (Rhycherus filamentosus)

Observer

scubawayne

Date

January 27, 2018 11:35 AM ACDT

Description

Mac's Ground is a small reef 4.5kms west of Glenelg in 17m of water

Tasselled Anglerfish - Photo (c) Sascha Schulz, some rights reserved (CC BY-NC), uploaded by Sascha Schulz
steve_reynolds's ID: Tasselled Anglerfish (Rhycherus filamentosus)
Added on October 5, 2023
Supporting

Photos / Sounds

What

Australian Giant Cuttlefish (Ascarosepion apama)

Observer

davemmdave

Date

May 17, 2020 04:12 PM ACST

Description

These cuttlefish need rock ledges and rocky terrain generally on which to lay their eggs.

Tags

dsm
Australian Giant Cuttlefish - Photo (c) John Turnbull, some rights reserved (CC BY-NC-SA)
steve_reynolds's ID: Australian Giant Cuttlefish (Ascarosepion apama)
Added on October 5, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Australian Giant Cuttlefish (Ascarosepion apama)

Observer

davemmdave

Date

May 17, 2020 03:41 PM ACST

Tags

dsm
Australian Giant Cuttlefish - Photo (c) John Turnbull, some rights reserved (CC BY-NC-SA)
steve_reynolds's ID: Australian Giant Cuttlefish (Ascarosepion apama)
Added on October 5, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Slender Cuttlefish (Doratosepion braggi)

Observer

davemmdave

Date

July 31, 2022 12:36 PM ACST

Description

Beach washed.
About 3-3.5 cm long (image 3 shows it across my boot cap).

Slender Cuttlefish - Photo (c) Warwick Moyse, some rights reserved (CC BY-NC), uploaded by Warwick Moyse
steve_reynolds's ID: Slender Cuttlefish (Doratosepion braggi)
Added on October 5, 2023
Supporting
Added as part of a taxon swap

Photos / Sounds

What

Spinytail Leatherjacket (Acanthaluteres brownii)

Observer

davemmdave

Date

March 10, 2023 12:42 PM ACDT

Tags

dsm
Spinytail Leatherjacket - Photo (c) J. Martin Crossley, some rights reserved (CC BY-NC-SA), uploaded by J. Martin Crossley
steve_reynolds's ID: Spinytail Leatherjacket (Acanthaluteres brownii)
Added on September 17, 2023
Supporting

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