Sunday, January 1, 2017

Species List: 31-12-2016, Terry's Delight, Arkwright Shoals off Yaroomba, Sunshine Coast, Queensland.

44 species found at Terry's Delight, Arkwright Shoals off Yaroomba, Sunshine Coast, Queensland, 31-12-2016.

Julie, Terry, Gary and David on this excursion consisting of 1 x 80 minute and 1 x 70 minute dives in water depths from 13 m to 16 m. 5 m viz, 25 C water temp and a little surge.

Both the diary and weather conditions finally agreed on a date to take More Mischief out to dive the local reefs. I don't want to tell any tales "out of school" but a couple of divers forgot their fins - no names. The whole day wasn't a complete disaster as they borrowed fins from the others and got in a dive during the "good samaritans'" surface interval. Nevertheless the overall total species count for the trip was still an excellent number. The side-gilled slug Tylodina corticalis was present in large numbers only being pipped in population by the ever present Doriprismatica atromarginata. There were many stripped-out sponges of their preferred variety. The seaweed Caulerpa racemosa is appearing in larger clumps and we were fortunate to find small species of Oxynoe amongst it. The Codium algae was hosting many small Elysia maoria.

Number of each species sighted: 1st dive/2nd dive
* Species with highest specimen count

Aegires citrinus 1/-
Aegires flores 7/4
Aegires villosus 1/0
Ardeadoris averni 1/-
Ardeadoris egretta 1/-
Ardeadoris sp. 2 -/1
Berthella martensi 1/-
Bornella anguilla 2/2
Bulbaeolidia alba 1/-
Chromodoris elisabethina 1/0
Chromodoris sp. 1 1/0
Dermatobranchus oculus 0/1
Dermatobranchus sp. 8 1/-
* Doriprismatica atromarginata 27/17
Elysia maoria 0/10
Flabellina rubrolineata 3/0
Goniobranchus collingwoodi 1/-
Goniobranchus geometricus 1/-
Goniobranchus splendidus 1/-
Goniodoridella savignyi -/1
Hexabranchus saguineus 1/-
Hypselodoris jacksoni 15/6
Hypselodoris maritima 1/-
Hypselodoris obscura 3/2
Hypselodoris tryoni 1/-
Jorunna sp. 3 -/1
Lobiger viridis 0/1
Oxynoe viridis 1/3
Phyllidia elegans 1/-
Phyllidia ocellata 1/-
Phyllidia varicosa 2/0
Phyllidiella lizae 1/0
Phyllidiella pustulosa 2/1
Phyllidiopsis cardinalis 0/1
Roboastra luteolineata 0/1
Sagaminopteron ornatum 3/2
Sagaminopteron psychedelicum 0/2
Tambja tenuilineata 1/0
Tenellia sibogae 0/4
Tenellia sp. 35 1/-
Thuridilla splendens 3/1
Tritoniopsis elegans 12/3
Tylodina corticalis 24/7
Verconia simplex -/1

Sagaminopteron psychedelicum

Hexabranchus saguineus

Tylodina corticalis - close-up of anterior

Hypselodoris maritima

Bulbaeolidia alba

Goniobranchus collingwoodi

Aegires flores - a pair,
one in profile one from above

Phyllidia elegans

Ardeadoris sp. 2

Jorunna sp. 3

Oxynoe viridis

Hypselodoris obscura

Goniodoridella savignyi

Early surface conditions - the wind did
get up to 15 knots by midday

Hypselodoris jacksoni

Doriprismatica atromarginata

Tambja tenuilineata

Thuridilla splendens


Tritoniopsis elegans (we have changed
 this species name from T. alba following
discussions with Terry Gosliner)

Bornella anguilla

Chromodoris elisabethina

Phyllidia varicosa - one of a pair of large
specimens feeding on a lower ledge

Chromodoris sp. 1 - at 140 mm long (measured)
it is the largest of this species we have sighted

Tylodina corticalis - displaying
its gill down the right side

Aegires villosus - this specimen lacking most of
the pink patches that usually overlay the orange

Flabellina rubrolineata

Roboastra luteolineata

Phyllidiopsis cardinalis

Dermatobranchus oculus

Tenellia sibogae

Elysia maoria

Spawn of Elysia maoria laid on Codium

Sagaminopteron ornatum

Aegires citrinus

Ardeadoris averni with Bornella anguilla to the left

Ardeadoris egretta

Goniobranchus splendidus

Hypselodoris tryoni

Dermatobranchus sp. 8