Nudibranch Central: March 2020

Sunday, March 29, 2020

Species List: 28-03-2020, Fish Cage, La Balsa Park, Mooloolah River, Mooloolaba, Qld.

15 species sighted at Fish Cage, La Balsa Park, Mooloolah River, Mooloolaba, Qld. 28-03-2020.

A single morning shore entry dive by Gary, David and Fran of 133 minutes. Maximum depth 5.9 m, 25 C water temperature and up to 3 m viz.

A dredger working the river lately has deposited tons of thick silt up river, sometimes 50-60 mm thick. All hydroids were covered with it. Goniodoridella sp. 1 continues to be the most common. Unidentia sp. 1 showed up for the party as well. Cratena lineata was showing high numbers. A good number of species.

Species and number thereof sighted
* Species with highest specimen count

Atys sp. 1 shell -2
Cratena lineata -25
Flabellina lotos -3
Goniobranchus daphne -1
Goniodoridella savignyi -1
* Goniodoridella sp. 1 -43
Haminoea sp. 17 shell -2
Hypselodoris obscura -2
Hypselodoris zephyra -1
Liloa brevis shell -5
Retusa sp. 5 shell -1
Retusa sp. 6 shell -1
Roxaniella leucampyx shell -2
Tenellia sp. 49 -1
Unidentia sp. 1 -8

Morning entry

Goniodoridella sp. 1

Glasses on

Flabellina lotos

Hypselodoris obscura

Atys sp. 1

Retusa sp. 5

Liloa brevis

Substrate

Goniodoridella sp. 1

Hypselodoris zephyra

Roxaniella leucampyx

Unidentia sp. 1

Cratena lineata

Goniodoridella sp. 1

Tenellia sp. 49

Goniodoridella sp. 1

Goniobranchus daphne

Goniodoridella savignyi

Unidentia sp. 1

Substrate

Hypselodoris obscura

Unidentia sp. 1

Flabellina lotos

Haminoea sp. 17

Roxaniella leucampyx

Retusa sp. 6

Monday, March 23, 2020

Species List: 23-03-2020, Rotunda upriver, La Balsa Park, Mooloolah River, Mooloolaba, Qld.

7 species sighted at Rotunda upriver, La Balsa Park, Mooloolah River, Mooloolaba, Qld. 23-03-2020.

A single shore entry solo dive by Gary of 125 minutes. Maximum depth 5.4 m, 25 C water temperature and up to 4 m viz.

With all the rain we have had the river was no longer brown, so naturally I decided to see what was on the bottom. Lately a dredger was been working in the river which probably has put about 50 mm of thick silt on the sand and rocks. Goniodoridella sp. 1 continues to be the most common. Because of the layer of silt the numbers of bubble shells was nearly none...found one!

Species and number thereof sighted
* Species with highest specimen count

Cratena lineata -4
Flabellina lotos -2
Goniodoridella savignyi -2
* Goniodoridella sp. 1 -140
Roxaniella leucampyx shell -1
Unidentia sp. 1 -4
Unidentia sp. 5 -1