Monday, June 25, 2018

Species List: 24-06-2018, Trench, Inner Gneering Shoals, off Mooloolaba, Sunshine Coast, Qld.

29 species sighted at Trench, Inner Gneering Shoals, off Mooloolaba, Sunshine Coast, Qld, 24-06-2018.

Gary and David on this excursion consisting of 1 x 76 minute and 1 x 71 minute dives in water depths from 13 m to 19 m. 15 m viz, 20 C water temp and moderate surge.

Earlier in the week Sunday looked like the most promising day however the weather forecast kept fluctuating and only looked suitable again late on Saturday. We headed for Old Woman Island with the intention of anchoring in the lee just in case the winds belied the forecast again. Unfortunately the swell was quite powerful (long period) which creates uncomfortable surge in shallow waters so, for this excursion we opted to visit a site we have not searched in almost 6 years. Back in 2012 was our last visit here when we were still operating the inflatable. On that visit we recorded 27 species but the viz at that time was only 5 m. Trench is one of our closest sites to the Mooloolah River entrance but still provides good depths to help mitigate the effects of the swell down below. As it happened the wind did not get above 10 knots except for a short period around midday. Today’s excursion turned up some interesting finds, some in pairs, such as: Crimora edwardsi, Verconia alboannulata, Verconia romeri, Diversidoris crocea and Hypselodoris zephyra. Other finds worth a special mention include Actinocyclus verrucosus together with its egg mass and the elegant coloured and patterned Goniobranchus coi. We concentrated our search on the northern wall that drops in a series of terraces to the sandy gutter - a wonderful variety of substrate. Next time we will swim across the Trench and explore the southern escarpment. Altogether a most rewarding excursion at a long neglected site.

Number of each species sighted: 1st dive/2nd dive
* Species with highest specimen count

Actinocyclus verrucosus -/1
Ardeadoris rubroannulata 1/-
Ardeadoris sp. 2 1/-
Bulbaeolidia alba 1/-
Cadlinella ornatissima 1/-
Chromodoris elisabethina 3/1
Chromodoris kuiteri 4/1
Crimora edwardsi -/2
Dermatobranchus rodmani 1/-
Diversidoris crocea 2/-
Doriprismatica atromarginata 1/-
Flabellina exoptata 2/-
Flabellina rubrolineata -/1
Flabellina sp. 1 -/1
Glossodoris rufomarginata 1/-
Glossodoris vespa 1/1
Goniobranchus coi 1/-
Goniobranchus decorus 1/1
Goniobranchus splendidus 1/-
Hypselodoris zephyra -/2
Phyllidia ocellata -/1
Phyllidiella pustulosa 1/-
Pleurobranchus peronii 1/-
Sagaminopteron ornatum 1/-
Tambja morosa 2/2
* Thuridilla splendens 5/1
Verconia alboannulata -/3
Verconia romeri -/2
Verconia simplex 2/1

From the archives - here is our old ride 
the RIB - RV Beagle, - 6 years ago

The current ride - More Mischief

Surface conditions


Cadlinella ornatissima

Goniobranchus splendidus - note the 
purplish rhinophores of this specimen

Chromodoris kuiteri

Dermatobranchus rodmani 

The rolled rhinophores of Thuridilla splendens

Glossodoris vespa - endemic to SE Qld.

Looking, looking, looking.

Bulbaeolidia alba

Chromodoris elisabethina

Verconia alboannulata

Verconia alboannulata - note the different 
colour accents and patterning

Crimora edwardsi

Goniobranchus decorus

Phyllidia ocellata

Flabellina rubrolineata

Flabellina sp. 1

Actinocyclus verrucosus - an uncommon find

Distinctive spawn of Actinocyclus verrucosus 

Pleurobranchus peronii 

Goniobranchus coi

Ardeadoris rubroannulata

Flabellina exoptata

Glossodoris rufomarginata

Sagaminopteron ornatum

Tambja morosa

Verconia simplex - with spawn

Diversidoris crocea - a pair

Verconia alboannulata - a pair, 
photo bombed by a brittle star

Crimora edwardsi - a pair

Verconia romeri - a pair

Hypselodoris zephyra - a pair