Sunday, August 20, 2017

Species List: 19-08-17, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast

11 species sighted at La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld 19-08-2017.

A single shore entry night dive by Terry, Julie and Gary of 100 minutes. Maximum depth 7m, 19 C water temperature and up to 5m viz.

In order to compare species diversity and abundance in relation to time of day, we opted to head into the river again tonight to see if we could find some different critters compared to the early dives. Unfortunately it was still dominated by the usual suspects, however the Dendrodoris fumata  was a nice find, as was the Pleurobranchus peronii  which has been scarce recently. The water temperature was 19 C, the air temperature was 19 C and the wind chill factor felt like -18 C on exiting the water and people wonder why we wear drysuits!

Number of species sighted
* Species with the highest specimen count

Atys semistriatus - 1
Cratena lineata - 4
Dendrodoris fumata - 1
Eubranchus sp. 10 - 3
Flabellina angelvaldesi - 1
*Flabellina rubrolineata - 11
Goniodoridella sp. 1 - 8
Hypselodoris kanga - 1
Hypselodoris obscura - 3
Hypselodoris zephyra - 1
Pleurobranchus peronii - 1

 Flabellina rubrolineata

 Atys semistriatus

 Pleurobranchus peronii

 The river at dusk

 Goniodoridella sp. 1

 Flabellina angelvaldesi

 Cratena lineata

 Dendrodoris fumata

 Eubranchus sp. 10
 Hypselodoris kanga

 Hypselodoris zephyra

Hypselodoris obscura

Species List: 19-08-17, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast

10 species sighted at La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld 19-08-2017.

A single shore entry morning (night) dive by Gary and Kellys Gang of 103 minutes. Maximum depth 5.9m, 20 C water temperature and up to 8m viz.

It has been a while since we dived an hour before sunrise. The critter show should have been different but the picking were slim in the beginning. Finding the liitle Retusa was a good find.

Number of species sighted
*Species with highest specimen count

Cratena lineata - 3
Dendrodoris denisoni - 3
Flabellina rubrolineata - 5
Goniobranchus aureopurpureus - 1
Goniobranchus daphne - 4
* Goniodoridella sp. 1 - 15
Hypselodoris obscura - 4
Hypselodoris zephyra - 1
Retusa sp. 3 - 1
Tenellia sibogae - 3

Tenellia sibogae light colour-form

Tenellia sibogae

Cratena lineata

Retusa sp. 3

Retusa sp. 3

Ovulid

Hypselodoris obscura

Hypselodoris obscura

Flabellina rubrolineata

Cratena lineata

Goniodoridella sp. 1

Flabellina rubrolineata

Goniobranchus daphne

Goniobranchus aureopurpureus

Goniobranchus aureopurpureus

Goniobranchus daphne

Goniobranchus daphne

Morning has come after the dive

Retusa sp. 3

Retusa sp. 3

Retusa sp. 3

Retusa sp. 3

Retusa sp. 3

Retusa sp. 3

Retusa sp. 3

Saturday, August 19, 2017

Species List: 18-08-17, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast

7 species sighted at La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld 18-08-2017.

A single shore entry dive by Terry and Julie of 67 minutes. Maximum depth 7m, 20 C water temperature and up to 5m viz.

Strong offshore winds again confined us to the river for an evening dive. David initially joined us for this dive but a gear failure saw him abort his dive early. With the target species very difficult to find Julie and Terry also shortened their dive time. An interesting find was the Spurilla brazilliana. This is a tramp species that we sometimes find under rocks inter-tidally on the Sunshine Coast, but this is the first time we have found it in the river.

Number of species sighted
*Species with highest specimen count

Bulbaeolidia alba - 1
Cratena simba - 1
Goniodoridella sp. 1 - 5
Hypselodoris obscura - 3
*Pteraeolidia semperi - 6
Spurilla brazilliana - 1
Tenellia sibogae - 2

 Spurilla brazilliana

 Bulbaeolidia alba

 Pteraeolidia semperi

Hypselodoris obscura


Species List: 17-08-2017, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld.

12 species sighted at La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld 17-08-2017.

A single shore entry dive by Terry and Julie of 107 minutes. Maximum depth 6.1m, 21 C water temperature and up to 8m viz.

With offshore conditions not suitable for boating, we opted for a quick afternoon dip in the river while visibility is still good. The current was very light which made for easy photography. Diversity seems to be on the improve, with food sources also becoming more prevalent. Of interesting note is that a juvenile Hypselodoris zephrya  was found by David and Gary on the 8th (the first time found in the river) and we found an adult specimen on this dive. 

Number of species sighted
*Species with highest specimen count

Bulbaeolidia alba - 1
Cratena lineata - 4
Cratena simba - 2
* Flabellina rubrolineata - 19
Goniobranchus daphne - 4
Goniodoridella savignyi - 2
Goniodoridella sp. 1 - 7
Hypselodoris kanga - 1
Hypselodoris obscura - 5
Hypselodoris zephyra - 1
Tenellia sibogae - 3
Tenellia sp. 24 - 1

 Cratena lineata

 Hypselodoris obscura

 Goniodoridella sp.1

 Bulbaeolidia alba

 Hypselodoris kanga

 Flabellina rubrolineata

 Tenellia sibogae

 Cratena simba

 Hypselodoris zephyra

 Tenellia sp. 24

 Goniobranchus daphne

 Sunset on the river

Goniodoridella savignyi