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RUDIE NUDIES – The Mating Game

RUDIE NUDIES – The Mating Game Nudibranch aficionados, those individuals who spend their time searching the ocean floor for the slimy objects of their desire, will at sometime or other have come across pairs of them conjugating. Because they fertilise internally...

03-04-2022 The Wall OWI

DAY/DATE Sunday 03/04/2022 SITE/S The WallOld Woman Island   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S The Wall, OWI The Wall, OWI SPECIES # 21 13 DURATION 100 Min 99 Min DEPTH/RANGE 5-11 m...

23-03-2022 Wobby Rock & Coles Hole

DAY/DATE Wednesday 23/03/2022 SITE/S Wobby Rock & Coles Hole   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Wobby Rock Coles Hole   SPECIES # 9 12   DURATION 81 Min 70 Min...

CERATA Part 3 – Defensive Attributes

CERATA Part 3 – Defensive Attributes In the Aeolidina, (the aeolids) the cerata have certainly reached the apogee of development, therefore most of the discussion in this Part will pertain to that group. Defences in the aeolids are concentrated in the cerata and...

Table of Sea Slug Feeding Preferences

A generalized table indicating the diet of the major sea slug groups. Click the image below to view the full table (opens in a Google Sheet in a separate tab) About the table The above is just an image for navigation purposes and will not show the latest...

18-02-2022 Nudi Retreat

DAY/DATE Friday 18/02/2022 SITE/S Nudi RetreatCurrimundi reef   PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Nudi Retreat Nudi Retreat SPECIES # 21 17 DURATION 79 Min 75 Min DEPTH/RANGE...

THURIDILLA ENTANGLEMENTS – Some observations on Thuridilla mating

Thuridilla Entanglements Some observations on Thuridilla mating Recently (Feb, 2022) I captured an image of a pair of our Thuridilla cf. splendens apparently engaging in the act of hypodermic insemination (shown above). The image shows both specimens of the pair with...

ILLUMINATION ENLIGHTENMENT – Bioluminescence in Nudibranchs

Plocamopherus ceylonicus displaying the four papilla-mounted bioluminescent globes arranged around the vulnerable gill. ILLUMINATION ENLIGHTENMENT Bioluminescence in Nudibranchs Species of the humble sea slug can possess unusual and extraordinary capabilities such as...

01-02-2022 Trench

DAY/DATE Tuesday 01/02/2022 SITE/S TrenchInner Gneerings   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Trench Trench SPECIES # 11 10 DURATION 71 Min 66 Min DEPTH/RANGE 15-20 m 15-20 m TEMP....

27-01-2022 La Balsa Park

DAY/DATE Thursday 27/01/2022 SITE/S La Balsa Park   PARTICIPANTS Julie, Terry & David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Rotunda Entry)   SPECIES # 10   DURATION 120 Min...

24-01-2022 La Balsa Park

DAY/DATE Monday 24/01/2022 SITE/S La Balsa Park   PARTICIPANTS Julie, Terry & David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Toilet Block Entry)   SPECIES # 17   DURATION 130 Min...

CERATA Part 2 – The Multiple Functions

CERATA Part 2 – The Multiple Functions In Part 1, an overview of cerata was given together with some examples of what are, and what are not, considered to be cerata and which sea slug taxa possess them. A list of their diverse roles was included. Here in Part 2...

22-12-2021 Nudi Ledge

DAY/DATE Wednesday 22/12/2021 SITE/S Nudi LedgeCurrimundi Reef   PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Nudi Ledge Nudi Ledge SPECIES # 25 24 DURATION 88 Min 75 Min DEPTH/RANGE...

18-12-2021 La Balsa Park

DAY/DATE Saturday 18/12/2021 SITE/S La Balsa Park   PARTICIPANTS Julie, Terry & David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Fish Cage Entry)   SPECIES # 24   DURATION 149 Min...

17-12-2021 Outriggers Ramp

DAY/DATE Friday 17/12/2021 SITE/S Outriggers Ramp   PARTICIPANTS Julie, Terry & David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S Outriggers RampGolden Beach   SPECIES # 4   DURATION 121 Min  ...

08-12-2021 Aquarium

DAY/DATE Wednesday 08/12/2021 SITE/S AquariumOuter Gneerings   PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Aquarium Aquarium SPECIES # 15 16 DURATION 80 Min 72 Min DEPTH/RANGE 16-19 m...

26-29/12/2021 Tryon & North-West Islands, GBR

DAY/DATE Frid-Monday 26-29/12/2021 SITE/S Tryon IslandNorth-West IslandPumpkin Passage PARTICIPANTS Julie,Terry,David, Sheryl TYPE Subtidal   MODE Boat Dives VESSEL MV Adori   DIVE 10 in total SITE/S Tryon & North-West IslandsPumpkin Passage SPECIES # 43...

19-11-2021 Nudi 2

DAY/DATE Friday 19/11/2021 SITE/S Nudi 2Currimundi Reef   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Nudi 2 Nudi 2 SPECIES # 20 22 DURATION 77 Min 69 Min DEPTH/RANGE 13-17 m 13-17 m TEMP. 22...

16-11-2021 Clown Reef

DAY/DATE Tuesday 16/11/2021 SITE/S Clown ReefOuter Gneerings   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Clown Reef Clown Reef SPECIES # 26 14 DURATION 71 Min 50 Min DEPTH/RANGE 14-20 m...

06-11-2021 Dropoff & Nudi 2

DAY/DATE Saturday 06/11/2021 SITE/S Dropoff & Nudi 2   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Dropoff Nudi 2   SPECIES # 17 21   DURATION 72 Min 72 Min  ...

05-11-2021 La Balsa Park

DAY/DATE Friday 05/11/2021 SITE/S La Balsa Park   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Fish Cage Entry)   SPECIES # 29   DURATION 162 Min  ...

27-10-2021 The Wall OWI

DAY/DATE Wednesday 27/10/2021 SITE/S The Wall Old Woman Island   PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S The Wall, OWI The Wall, OWI SPECIES # 32 36 DURATION 93 Min 86 Min...

09-10-2021 Alexandra Headland – Intertidal

DAY/DATE Saturday 09/10/2021 SITE/S Alexandra HeadlandWave Platform   PARTICIPANTS David   TYPE Intertidal   MODE Intertidalsearching   VESSEL –   DIVE 1 Session   SITE/S Alexandra HeadlandWave Platform SPECIES # 3   DURATION...

VEXATIOUS VARIABILITY – No. 3 Goniobranchus splendidus

VEXATIOUS VARIABILITY – No. 3 Goniobranchus splendidus Goniobranchus splendidus is a common and conspicuous species of nudibranch, though endemic to the east coast of Australia, from southern New South Wales to central Queensland. It exhibits variation in...

19-09-2021 Mangrove Boardwalk – Intertidal

DAY/DATE Sunday 19/09/2021 SITE/S Mangrove Boardwalk   PARTICIPANTS Julie & Terry   TYPE Intertidal   MODE Intertidal searching   VESSEL –   DIVE 1 Session   SITE/S Mangrove Boardwalk Golden Beach SPECIES # 3   DURATION 1...

18-09-2021 Mangrove Boardwalk – Intertidal

DAY/DATE Saturday 18/09/2021 SITE/S Mangrove Boardwalk   PARTICIPANTS Julie & Terry   TYPE Intertidal   MODE Intertidal searching   VESSEL –   DIVE 1 Session   SITE/S Mangrove Boardwalk Golden Beach SPECIES # 2   DURATION 1...

09-09-2021 La Balsa Park

DAY/DATE Thursday 09/09/2021 SITE/S La Balsa Park   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Rotunda Entry)   SPECIES # 16   DURATION 142 Min  ...

VEXATIOUS VARIABILITY – No. 2 Goniobranchus geometricus

VEXATIOUS VARIABILITY – No. 2 Goniobranchus geometricus Goniobranchus geometricus, to the uninitiated, can appear very much like a phyllidiid nudibranch if the gill is not displayed – all black and white and lumpy. However there are, from time to time,...

30-08-2021 Canyons & Trench

DAY/DATE Monday 30/08/2021 SITE/S Canyons & Trench   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Canyons Trench   SPECIES # 16 17   DURATION 71 Min 69 Min  ...

VEXATIOUS VARIABILITY – No. 1 Hypselodoris jacksoni

VEXATIOUS VARIABILITY – No. 1 Hypselodoris jacksoni There are a number of common species of nudibranch that can exhibit a variability of presentation. These differences can sometimes be put down to geographical location but more than often, not necessarily so....

26-08-2021 Canyons?

DAY/DATE Thursday 26/08/2021 SITE/S Canyons?   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1   SITE/S Canyons?   SPECIES # 9   DURATION 65 Min   DEPTH/RANGE 17 – 19 m  ...

22-08-2021 Nudi 2

DAY/DATE Sunday 22/08/2021 SITE/S Nudi 2 Currimundi Reef PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Nudi 2 Nudi 2 SPECIES # 28 28 DURATION 80 Min 66 Min DEPTH/RANGE 13-17 m 13-17 m TEMP....

20-08-2021 East Boulders & The Wall

DAY/DATE Friday 20/08/2021 SITE/S East Boulders OWI The Wall OWI PARTICIPANTS Terry, David TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S East Boulders The Wall SPECIES # 19 16 DURATION 99 Min 78 Min DEPTH/RANGE 9-12m 6-14m TEMP....

14-08-2021 Nudi Ledge

DAY/DATE Saturday 14/08/2021 SITE/S Nudi LedgeCurrimundi Reef PARTICIPANTS Terry, David TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Nudi Ledge Nudi Ledge SPECIES # 25 23 DURATION 83 Min 77 Min DEPTH/RANGE 14-17m 14-17m TEMP. 20C...

13-08-2021 Shellacey Reef

DAY/DATE Friday 13/08/2021 SITE/S Shellacey ReefOuter Gneering Shoals PARTICIPANTS Terry, David TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S Shellacey Reef Shellacey Reef SPECIES # 22 20 DURATION 78 Min 79 Min DEPTH/RANGE 14-18m...

PHYLLIDIID SUCTORIAL FEEDING

Phyllidiid Suctorial Feeding We are occasionally fortunate enough to encounter and record a nudibranch feeding, that is, to actually see that they are feeding, because most often the process is hidden from us beneath them. In those instances, with the sponge-feeders,...

24-07-2021 La Balsa Park

DAY/DATE Saturday 24/07/2021 SITE/S La Balsa Park   PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Toilet Block Entry)   SPECIES # 13   DURATION 77 Min...

23-07-2021 Nudi Retreat

DAY/DATE Friday 23/07/2021 SITE/S Nudi Retreat   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Nudi Retreat Nudi Retreat   SPECIES # 14 16   DURATION 80 Min 64 Min  ...

20-07-2021 Trench

DAY/DATE Tuesday 20/07/2021 SITE/S Trench   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Trench Trench   SPECIES # 21 18   DURATION 78 Min 68 Min   DEPTH/RANGE 14 –...

13-07-2021 Dakota & Rocky

DAY/DATE Tuesday 13/07/2021 SITE/S Dakota & Rocky   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Dakota Rocky   SPECIES # 6 16   DURATION 75 Min 72 Min   DEPTH/RANGE...

10-07-2021 The Trench

DAY/DATE Saturday 10/07/2021 SITE/S The TrenchInner Gneering Shoals PARTICIPANTS Terry, David TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S The Trench The Trench SPECIES # 25 18 DURATION 88 Min 75 Min DEPTH/RANGE 14-19m 14-19m...

24-06-2021 La Balsa Park

DAY/DATE Thursday 24/06/2021 SITE/S La Balsa Park   PARTICIPANTS Terry, David   TYPE Subtidal – Night Dive   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Fish Cage Entry)   SPECIES # 12   DURATION 101...

18-06-2021 La Balsa Park

DAY/DATE Friday 18/06/2021 SITE/S La Balsa Park   PARTICIPANTS Julie, Terry, David   TYPE Subtidal   MODE Shore Entry   VESSEL –   DIVE 1   SITE/S La Balsa Park (Toilet Block Entry)   SPECIES # 19   DURATION 112 Min  ...

15-06-2021 The Wall OWI

DAY/DATE Tuesday 15/06/2021 SITE/S The Wall OWI   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2 SITE/S The Wall The Wall SPECIES # 25 19 DURATION 88 Min 86 Min DEPTH/RANGE 5-15 m 5-15 m TEMP. 21 C 21...

13-06-2021 Nudi 2 & C Spot

DAY/DATE Sunday 13/06/2021 SITE/S Nudi 2 & C Spot   PARTICIPANTS Terry, David   TYPE Subtidal   MODE Boat Dives   VESSEL Rebel II   DIVE 1 2   SITE/S Nudi 2 C Spot   SPECIES # 13 12   DURATION 71 Min 76 Min  ...