Friday 5 December 2014

Fly Point 29/11/2014 Afternoon dive

Branch stats (Name, size, numbers)
Flypoint Nelson Bay, 29/11/2014, 14:24 hrs for 92 min., water temperature 21 degrees, visibility 12 metres

Aphelodoris varia 38 1
Aplysia gigantea 600 2
Bullina lineata 14 2
Ceratosoma amoenum 18 3
Cuthona sibogae (juvenile) 8 1
Doriopsilla pecularis 24 1
Doriprismatica atromarginata 50 4
Flabellina rubrolineata 14 1
Goniobranchus daphne 20 2
Goniobranchus splendidus 30 2
Goniodoridella savignyi 4 1
Hypselodoris bennetti 19 4
Phidiana sp. 1 8 1
Phyllodesmium poindimiei 15 1
Pteraeolidia ianthina 15-200 5
Thecacera pennigera 14 1
Unidentified dorid (maybe Rostanga arbutus) 3 1

Photos
Here is why I often get criticised for bad photos. This animal was a maximum of 3mm in size. It has perfoliate rhinophores with a smooth club shaped apex, certainly a Dorid nudibranch, possibly a juvenile Rostanga arbutus maybe.



Another bad photo. It belongs to the series above. This guy was extremely hard to identify because it doesn't show the usual features. I believe it is a juvenile Cuthona sibogae. Still an exciting find, especially because it is probably a juvenile. Cuthona sibogae and its food source are at home in the tropics and must have been travelled down to the ice fresh, temperate water via the East Australian current.

I know it is favourism but I just like small aeolids. They keep surprising me and pop up when you least expect it. This animal has similarities to Caloria elegans but the yellow rhinophoral markings and yellow submarginal ceratal bands are a bit confusing.
Reedited 25/11/2015 Caloria elegans renamed into Phidiana sp. 1 (same as found in my research area, unknown species probably held back by researcher)

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