Sunday, May 1, 2016

Species List: La Balsa, Mooloolah River, Sunshine Coast, 28-04-2016

13 species sighted at La Balsa, Mooloolah River, Sunshine Coast.

Terry, Gary and David on this single, shore entry dive of  161 minutes. Maximum depth 5.6 m,  23C water temperature and 5 m viz.

The tides are smaller at the moment which means less run and we can get in the water earlier before the high tide. Amongst the usual finds were a couple of not-so-common species. An undescribed species of Trinchesia was found and is our Trinchesia sp. 29 on our site. In the past we would have "lumped" it in with Trinchesia ornata however the recent book by Gosliner et al: Nudibranch & Sea Slugs Identification, indicates that these look-alikes are a clade of different species. A search for the original paper by Baba describing Trinchesia ornata has borne fruit. It confirms that our original Trinchesia ornata is not that species but another undescribed one. In fact it now appears that we had up to four cryptic species placed under that name. The website will be updated before tomorrow to reflect those changes. We also hope that DNA sequencing will be published in the near future to either support or refute the changes we have made.

Number of species sighted
* Species with highest specimen count.

Atys sp. 1 -1
Bulbaeolidia alba -2
Dendrodoris nigra -1
Doto sp. 3 -2
Elysia pusilla -1
Goniobranchus daphne -9
Goniobranchus reticulatus -1
Goniodoridella sp. 1 -2
Goniodoridella sp. 3 -1
Hypselodoris obscura -5
Pleurobranchus weberi -1
* Pteraeolidia semperi -51
Trinchesia sp. 29 -1

Goniodoridella sp. 3

Atys sp. 1 - shell

Goniodoridella sp. 1

Pteraeolidia semperi 

Bulbaeolidia alba

Doto sp. 3

Pleurobranchus weberi - juvenile

Preparing for the immersion

Hypselodoris obscura

Goniobranchus reticulatus

Trinchesia sp. 29

Dendrodoris nigra

Goniodoridella sp. 3

Goniobranchus daphne