DAY/DATE Sunday 25/09/2022 SITE/S Forskali ParkCurrimundi reef PARTICIPANTS Julie, Terry, David TYPE Subtidal MODE Boat Dives VESSEL Rebel II DIVE 1 2 SITE/S Forskali Park Forskali Park SPECIES # 24 21 DURATION 73 Min 76 Min... DAY/DATE Sunday 18/09/2022 SITE/S Nudi RetreatCurrimundi reef PARTICIPANTS Terry, David TYPE Subtidal MODE Boat Dives VESSEL Rebel II DIVE 1 2 SITE/S Nudi Retreat Nudi Retreat SPECIES # 12 13 DURATION 65 Min 73 Min DEPTH/RANGE 12-16... NUDIBRANCH GILL GUARDING Shell-less but not defenceless The sea is full of hungry mouths, many many hungry mouths either lying patiently in ambush or constantly on the move, in all directions, hunting for any opportunity to take a bite and feed. The last thing any... DAY/DATE Tuesday 14/06/2022 SITE/S North West ReefMudjimba Island PARTICIPANTS Terry, David TYPE Subtidal MODE Boat Dives VESSEL Rebel II DIVE 1 2 SITE/S North West Reef North West Reef SPECIES # 6 5 DURATION 67 Min 65 Min... DAY/DATE Sunday 05/06/2022 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 # 12 10 DURATION 75 Min 70 Min DEPTH/RANGE 14-17 m... THE ALLURING ARDEADORIS – Some examples of the genus Some nudibranchs are both a delight to find and undemanding to photograph. Every time I happen across a species of Ardeadoris, concerns of composition and exposure just melt away as I enjoy myself, capturing... 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... 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... 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 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... 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... 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 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... 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... 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.... 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... 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 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... CERATA: The Multifunctional “Fingers” of Sea Slugs Part 1 – Introduction The term cerata (singular: ceras) is most often associated with the processes that arise from the dorsum of the Aeolidina – the aeolid nudibranchs. However, it is also... 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... 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... 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 ... 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... 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... HUNTER SEA SLUGS Brittle Stars, Worms, Bivalves and Crustaceans as prey In this NudiNote on sea slug feeding we look at those that are hunters, those sea slugs that actively track down their mobile animal prey as opposed to the majority of sea slugs that are consumers... 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... 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... 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 ... 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 ... 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... 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... Ceratosoma trilobatum – Ceratosoma tenue – Ceratosoma gracillimum In No. 3 of this series there are actually 3 species to compare. These 3 are quite often confused and there are good reasons for that confusion. All were described not last century but the... 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... More Colonial Consumers Sea Slugs that graze upon Ascidians, Bryozoans and Entoprocts It’s been mentioned before that the feeding preferences of sea slugs, across the entire group, encompass an extremely diverse range of food types, but conversely, each species... 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... 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... 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 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,... 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 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.... 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 ... 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.... 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.... 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... 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... “The Sting’s the Thing” Sea Slug Predators of Anemones and Hydroids Have you ever inadvertently brushed past a stinging hydroid during a dive and some small part of your skin, being exposed, receives a searing sting? Or perhaps you have been enjoying the surf and a... 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,... 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... 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 ... 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 –... 
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