Monday, February 6, 2017

Species List: 04-02-2017, Terry's Delight, Arkwright Shoals, south of Coolum, Sunshine Coast, Qld.

51 species sighted at Terry's Delight, Arkwright Shoals, south of Coolum, Sunshine Coast, Qld, 04-02-2017

Julie, Terry, Gary and David on this excursion consisting of 1 x 96 minute and 1 x 77 minute dives in water depths from 13 m to 17 m. 5 m viz, 24 C water temp and a little surge.

Colder dirty water greeted us as we descended on the dive. The River and Old Woman Island have been delivering 26-27 C water temperatures lately but the deeper sites are hanging on to their cooler water (relatively speaking that is). The ridges and ravines of this site provide a number of different habitats and this is reflected in the species count. The first thing to get our attention was the large numbers of Tylodina corticalis making a meal of their preferred grey/yellow sponge. Some of these sponges were totally decimated whilst others were covered in several of the feeding slugs or their spawn. It'll be a boom followed by a bust if the sponges don't keep up. Goniobranchus coi was a rare find especially at 70 mm in length - a new size record.

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

Aegires citrinus 1/4
Aegires flores 3/5
Aegires gardineri 2/5
Aegires incusus 1/-
Bornella anguilla 4/1
Cadlinella ornatissima 1/-
Chelidonura inornata 1/-
Chromodoris elisabethina 1/3
Chromodoris kuiteri -/4
Chromodoris sp. 1 2/-
Chromodoris willani -/1
Dermatobranchus fasciatus -/1
Dermatobranchus ornatus 2/4
Dermatobranchus sp. 8 1/-
Doriprismatica atromarginata 27/7
Elysia maoria 27/5
Flabellina rubrolineata -/1
Glossodoris vespa 1/-
Goniobranchus coi -/1
Goniobranchus collingwoodi -/1
Goniobranchus decorus -/1
Goniobranchus geometricus -/3
Goniobranchus splendidus 3/4
Goniodoridella savigny 1/-
Gymnodoris alba 1/-
Gymnodoris sp. 10 2/-
Hypselodoris bullockii -/1
Hypselodoris jacksoni 7/10
Hypselodoris maritima -/1
Hypselodoris whitei 1/3
Mexichromis macropus 1/-
Mexichromis trilineata 2/-
Miamira magnifica -/1
Nembrotha purpureolineata -/1
Phyllidia ocellata 3/1
Phyllidia varicosa 2/1
Phyllidiella lizae 1/2
Phyllidiella pustulosa 1/3
Phyllidiopsis burni -/1
Phyllodesmium magnum -/1
Phyllodesmium sp. 2 1/-
Pteraeolidia semperi -/1
Roboastra luteolineata 2/-
Sagaminopteron ornatum 9/7
Sagaminopteron psychedelicum -/1
Tambja victoriae 1/-
Tenellia sp. 33 1/-
Thorunna sp. 1 2/-
Thuridilla splendens 2/6
Tritoniopsis elegans 5/8
*Tylodina corticalis 60/11

Cadlinella ornatissima

Phyllidia varicosa

Roboastra luteolineata

Dermatobranchus ornatus

Gymnodoris sp. 10

Miamira magnifica

Spawn of Miamira magnifica

Chromodoris kuiteri

Aegires flores

Goniobranchus coi 

Goniobranchus collingwoodi

Aegires citrinus

Dermatobranchus fasciatus

Flabellina rubrolineata

Phyllodesmium magnum

Tritoniopsis elegans

Tylodina corticalis

Phyllidia ocellata

Tenellia sp. 33

Phyllodesmium sp. 2 - being
attacked by a Gymnodoris sp.

Goniodoridella savigny

Gymnodoris alba

Chromodoris sp. 1 

Thuridilla splendens

Aegires gardineri

Hypselodoris whitei 

Nembrotha purpureolineata

Doriprismatica atromarginata

Hypselodoris jacksoni 

Tambja victoriae


Thorunna sp. 1

Bornella anguilla

Goniobranchus splendidus

Tylodina corticalis - feeding on sponge

Elysia maoria

Chromodoris elisabethina

Mexichromis trilineata

Surface conditions -
Looking south west towards Mt. Coolum

Goniobranchus geometricus

Hypselodoris bullockii 

Phyllidiella lizae

Chromodoris willani