Wednesday, March 4, 2020

Species List: 03-03-2020, Fish Cage, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld.

20 species sighted at Fish Cage, La Balsa Park, Mooloolah River, Mooloolaba, Sunshine Coast, Qld. 03-03-2020.

A single shore entry dive by Gary, Fran and Nevar of 262 minutes. Maximum depth 5.7 m, 28 C water temperature and up to 6 m viz.

This the first dive done in 2 weeks after seeing the river getting flushed out. The first dive in autumn the water temp is still quite warm at 28C. Upon descending thru the thermocline of brown water we where surprised to up to 6 m visibility with no current...nice. The top brown layer made the substrate looks yellow-brown. Your eyes made adjustments to the colour but the camera did not. The regular food sources have not come back yet but there are food sources because of the number of nudibranchs recorded. The numbers of Goniodoridella sp. 1 animals was amazing, the egg masses were also amazing. This species seems to be doing quite well despite the conditions. A couple of new species was a surprise. A narrow Volvulla rostrata  shell matches nothing we have seen before. And the "blue-faced" Unidentia sp. 11 was quite striking. There was also a new species of Retisa added.

This dive added 3 new species to our list. Thank you Bob Burn.

Species and number thereof sighted
* Species with highest specimen count

Atys semistriatus shell and live animal -2
Cratena lineata -8
Elysia sp. 11 -1
Flabellina sp. 4 -1
Goniodoridella savignyi -1
* Goniodoridella sp. 1 -118
Goniodoridella sp. 6 -1
Gymnodoris sp. 10 -1
Gymnodoris sp. 22 -2
Gymnodoris sp. 25 -1
Haminoea sp. A shell -4
Haminoea sp. B shell -1
Hypselodoris obscura -6
Liloa brevis shell -1
Retusa sp. 5 shell -4
Retusa sp. 6 shell -1  NEW SPECIES
Roxaniella leucampyx shell -5
Unidentia sp. 1 -5
Unidentia sp. 11 -2 NEW SPECIES
Volvulla rostrata shell -1 NEW SPECIES

Brown entry


Entry

Ready!

Substrate

Liloa brevis shell

Volvulla rostrata shell  NEW SPECIES

Volvulla rostrata shell  NEW SPECIES

Retusa sp. 5 shell 

Haminoea sp. B shell

Roxaniella  leucampyx  shell

Haminoea sp. A shell

Atys semistriatus shell

Substrate

Retusa sp. 5 shell

Cratena lineata

Goniodoridella sp. 1

Goniodoridella sp. 1

Goniodoridella sp. 1

Goniodoridella sp. 1

Haminoea sp. A shell

Atys semistriatus live animal

Goniodoridella sp. 1

Goniodoridella savignyi

Goniodoridella sp. 1

Goniodoridella sp. 1

Goniodoridella sp. 1

Unidentia sp. 11 NEW SPECIES

Unidentia sp. 1

Goniodoridella sp. 1

Unidentia sp. 1

Substrate

Unidentia sp. 11 NEW SPECIES

Unidentia sp. 11  NEW SPECIES

Unidentia sp.

Cratena lineatq

Gymnodoris sp. 10 

Gymnodoris sp. 22

Hypselodoris obscura

Goniodoridella sp. 6 

Goniodoridella sp. 1

Gymnodoris sp. 22

Retusa sp. 6 shell   NEW SPECIES

Gymnodoris sp. 25

Hypselodoris obscura

Fish Cage

Fish Cage

Gymnodoris sp. 10 gill close-up

Flabellina sp. 4