Saturday, August 26, 2017

Species List: 25-08-2017, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld.

16 species sighted at La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld, 25-08-2017.

A single shore entry dive by Julie, Terry, Gary and David of 118 minutes. Maximum depth 6.9 m, 21 C water temperature and up to 5 m viz.

The whole Team was in attendance for this River dive. A reasonable species count was compiled. Many Gymnodoris were sighted across four different species which begs the question: What sea slugs are they preying upon? Two specimens of a nudibranch only recorded once by us before, Goniodoridella sp. 5, were found. 6 aeolids, 3 Chromodorididae, 4 Gymnodorididae, 3 Goniodoididae

Number of species sighted
* Species with highest specimen count

Bulbaeolidia alba -4
Cratena lineata -4
Flabellina rubrolineata -7
Goniobranchus aureopurpureus -1
Goniobranchus daphne -3
Goniodoridella savignyi -1
* Goniodoridella sp. 1 -12
Goniodoridella sp. 5 -2
Gymnodoris sp. 8 -2
Gymnodoris sp. 9 -1
Gymnodoris sp. 10 -6
Gymnodoris sp. 17 -2
Hypselodoris obscura -6
Pteraeolidia semperi -6
Tenellia sibogae -2
Tenellia sp. 24 -1


Lining up the ducks

Hypselodoris obscura

Pteraeolidia semperi

Goniodoridella sp. 1 - most numerous

Tenellia sibogae

Goniobranchus aureopurpureus

Goniodoridella sp. 5

Goniodoridella sp. 5

Goniodoridella savignyi

Bulbaeolidia alba

Cratena lineata

Substrate - growth covered rocks on the 
slope to the bottom of the channel

Substrate - in parts the tidal waters have scoured 
ledges and undercuts in the soft rock

Gymnodoris sp. 17

Gymnodoris sp. 10

Gymnodoris sp. 10 - the business end 
of this predator upon sea slugs

Gymnodoris sp. 8

Goniodoridella sp. 5 - views 
of another specimen

Goniodoridella sp. 5

A slime of Flabellina rubrolineata

Gymnodoris sp. 9