Saturday, May 21, 2016

Species List: Nudi Ledge, Currimundi Reef, Sunshine Coast, Queensland, 19-05-2016

37 species sighted at Nudi Ledge, Currimundi Reef, Sunshine Coast, Queensland.

Terry, Gary and David on this excursion consisting of 1 x afternoon dive of 84 minutes and 1 x night dive of 77 minutes in water depths from 15 m to 18 m. 12 m viz, 23 C water temp and no surge.

It has been quite some time since we last undertook a night dive on the offshore reefs of the Sunshine Coast. Terry floated the idea and we jumped at it. His suggestion that we try Nudi Ledge was an inspired choice. Conditions were absolutely perfect with calm seas, very little swell and a moonlit night. Currimundi Reef is certainly back to its best with the diversity of slugs we are sighting. The find of the excursion is no doubt the pair of extremely large Mariona rubra. When the focus is on searching for small slugs in the 5 - 20 mm range it comes as a complete surprise - no, astonishment, to realise that the piece of soft coral you think you are looking at is actually a living slug. It also takes a conscious effort to control the breathing rate as the recognition sinks in and the manoeuvring for photographing it takes place. This is a new species to add to our list. The other find of note is the large number of Atys semistriatus that had emerged from the crevices to feed after dark.

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

Aegires villosus  -/1
Ardeadoris sp. 2 3/3
Atys semistriatus -/8
Bornella anguilla 1/2
Chelidonura inornata 6/2
Chromodoris elisabethina 3/2
Chromodoris kuiteri 2/2
Chromodoris striatella -/2
Dermatobranchus oculus 1/-
* Dermatobranchus ornatus 3/13
Dermatobranchus sp. 7 1/-
Dermatobranchus tuberculatus 1/-
Discodoris cebuensis 1/-
Doriprismatica atromarginata 2/8
Elysia pusilla -/1
Goniobranchus geometricus 2/1
Goniobranchus reticulatus 1/-
Goniobranchus splendidus 1/3
Goniobranchus tinctorius 1/-
Glossodoris vespa 3/1
Hexabranchus sanguineus juvenile 1/-
Hypselodoris bullockii 1/-
Hypselodoris jacksoni 2/3
Hypselodoris obscura 1/-
Marionia rubra 2/- New Species
Nembrotha purpureolineata 2/-
Phyllidia ocellata 1/-
Phyllidia picta -/1
Phyllidia varicosa 2/-
Phyllidiella annulata -/1
Phyllidiella lizae -/1
Phyllidiella pustulosa 1/1
Pteraeolidia semperi 4/2
Roboastra luteolineata -/1
Sagaminopteron ornatum -/2
Trinchesia diversicolor 1/-
Tritoniopsis alba 1/-

Bornella anguilla

Chelidonura inornata - tailing

Hypselodoris jacksoni

Chromodoris elisabethina

Surface conditions

Marionia rubra - New species - with shrimps

Dermatobranchus oculus

Phyllidia varicosa

Hexabranchus sanguineus - juvenile

Chromodoris kuiteri

Phyllidia ocellata

Pteraeolidia semperi

Goniobranchus reticulatus

Glossodoris vespa

Goniobranchus splendidus

Phyllidia picta

Sagaminopteron ornatum

Phyllidiella annulata

Ardeadoris sp. 2

Atys semistriatus - feeding after sunset

Substrate - heavy cover of soft corals

Looking along the ledge

Approaching Goniobranchus geometricus

Goniobranchus geometricus - up close

Discodoris cebuensis 

Nembrotha purpureolineata 

Hypselodoris bullockii

Dermatobranchus ornatus

Tritoniopsis alba

Marionia rubra - compare to hand size

Marionia rubra

Aegires villosus

Chromodoris striatella

Roboastra luteolineata