Tuesday, May 13, 2014

Species List: La Balsa Park, Mooloolah River, Sunshine Coast, 11-05-2014

8 species sighted on a single shore entry night dive at La Balsa Park, Mooloolah River, Sunshine Coast.

Julie, Terry and David on this 110 minute dive in water depths to 6.3m. Max 3m viz and 21C water temp.

We entered the river guided by the last rays of the setting sun and the final run of the incoming tide. We descended to the "fish cage" but alas there were no fish to see here this time. Dusk and dawn are feeding times for many fish so we suspect they were either out hunting or tucked away to avoid being hunted. Our timing was perfect as we found a new species to add to our list - Pleurobranchus weberi - just emerging from the silt for nocturnal activity. Three specimens were sighted and all were large at about 150mm in length providing a nice sized subject to photograph however the extra water between lens and subject created some backscatter issues.

* Species with the highest specimen count

Atys sp. 1 2
Chelidonura fulvipunctata 1
Flabellina rubrolineata 1
Goniobranchus daphne 2
Noumea simplex 1
Pleurobranchus weberi 3 (New species)
Pteraeolidia ianthina 7
* Unidentia angelvaldesi 25

Goniobranchus daphne

Pleurobranchus weberi - new species for our list

Pleurobranchus weberi

Pleurobranchus weberi

Pleurobranchus weberi

Pleurobranchus weberi

Atys sp. 1

Noumea simplex

Flabellina rubrolineata

Pteraeolidia ianthina

Unidentia angelvaldesi

Chelidonura fulvipunctata