Saturday, January 13, 2018

Species List: 11-01-2018, Toilet Block, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld.

14 species sighted at Toilet Block, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld, 11-01-2018.

A single shore entry dive by Julie, Gary and David of 123 minutes. Maximum depth 6.6 m, 28 C water temperature and 4 m viz.

After suiting up in the sun getting into the water unfortunately provided only minimal relief. The temperature of the  top 2 metres of water was almost 29 C only dropping to 28 C as we headed towards the bottom of the channel. Mostly just some of the usual suspects sighted however a new species for our Sunshine Coast List - Discodoris sp. 5 - was a good find. The specimen seems to have a malformed right rhinophore pocket with the actual rhinophore on that side absent. We will be monitoring the river species closely this year as last year we got the impression that the warmer summer waters caused a collapse in numbers of both species sighted and their populations.

Species and number thereof sighted
* Species with highest specimen count

Bulbaeolidia alba -1
Dendrodoris nigra -1
Discodoris sp. 5 -1 New Species
Flabellina rubrolineata -1
Goniobranchus daphne -7
Goniobranchus decorus -1
Goniodoridella savignyi -2
Goniodoridella sp. 1 -6
Gymnodoris sp. 9 -2
Gymnodoris sp. 10 -2
Hypselodoris obscura -4
Myja longicornis -1
* Pteraeolidia semperi -13
Tenellia sibogae -3

Hypselodoris obscura

Goniobranchus decorus

Pteraeolidia semperi - anterior aspect

Goniobranchus daphne

Goniodoridella savignyi

Gymnodoris sp. 10

Bulbaeolidia alba

Dendrodoris nigra

Pteraeolidia semperi - juvenile specimen

Flabellina rubrolineata

Gymnodoris sp. 9

Tenellia sibogae

Entry point with locals trying 
to cool off in the tepid river water - 
perhaps a sign is needed warning of stonefish

Discodoris sp. 5 - New species

Goniodoridella sp. 1

Substrate at base of channel marker


Myja longicornis on hydroid stem

Tenellia sibogae