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...
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 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,...
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 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....
“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 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...
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...
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 ...
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...
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 ...
DAY/DATE Friday 21/05/2021 SITE/S La Balsa Park PARTICIPANTS Terry, David TYPE Subtidal MODE Shore Entry VESSEL – DIVE 1 SITE/S La Balsa Park (Rotunda) SPECIES # 8 DURATION 55 Min DEPTH/RANGE To 5.3...
SPONGIVORES – The Sponge Eaters Sponges (Phylum Porifera) are one of simplest and oldest of multicellular animals. They have the least complex body form of the multicellular animals. Only a few specialist predators are known to be exclusively spongivores, that...
DAY/DATE Saturday 08/05/2021 SITE/S Coles Hole PARTICIPANTS Terry, David TYPE Subtidal MODE Boat Dives VESSEL Rebel II DIVE 1 2 SITE/S Coles Hole Coles Hole SPECIES # 15 6 DURATION 63 Min 66 Min DEPTH/RANGE 16-20 m 16-20 m TEMP. 23 C...
DAY/DATE Friday 30/04/2021 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 # 12 DURATION 143 Min ...
DAY/DATE Wednesday 28/04/2021 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 # 15 DURATION 126 Min...
Slugivores – Sea Slugs That Prey On Sea Slugs The great majority of sea slug species are carnivorous, meaning they prey on animal life rather than plant life. It is often not appreciated that sponges, bryozoans and hydroids etc. although primitive life forms,...
Hitchin’ a Ride on the Sea Slug Train It is often said there is no such thing as a free meal, but what about a free ride to collect your meal? One sees sea slugs on many sessile invertebrates either feeding or traversing but only occasionally does one see...
The Algae Grazers (Header image above – Petalifera ramosa) It has long been established that the algae are the base upon which the marine food web is built and sustained. Algae are an important food source for numerous marine animals across many different...
Many people are surprised to learn that some nudibranch sea slugs are actually corallivorous, that is they feed upon corals. Those that keep corals in aquariums however know only too well the havoc certain nudibranchs can cause particular corals. Corals don’t look to...
DAY/DATE Tuesday 16/02/2021 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 # 7 DURATION 126 Min ...
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