DAY/DATE
Monday
28/12/2020
SITE/S
Shellacey Reef
Outer Gneerings
PARTICIPANTS
Julie, Terry, David
TYPE
Subtidal
MODE
Boat Dives
VESSEL
More Mischief
DIVE
1
2
SITE/S
Shellacey Reef
Shellacey Reef
SPECIES #
23
16
DURATION
72 Min
70 Min
DEPTH/RANGE
14-18m
14-18m
TEMP.
25 C
25 C
VIS.
10 m
10 m
SURGE
Light
Light
CURRENT
Nil
Nil
COMMENTS & OBSERVATIONS
Being a public holiday it was thought best to avoid the boat ramps so we took More Mischief out, the weather appearing to be suitable. With all the run-off from the recent rain we decided it would be best to go right offshore to the Gneering Shoals and Shellacey Reef was the destination. It provides a choice of depths as well. It turned out to be a dorid kind of day with 24 of the 31 species sighted falling into that category. A current greeted us on entry to the second dive but was limited to the first several metres of depth. Finds of note included: Okenia hallucigenia, Phyllidia cf. elegans, Dermatobranchus semilunus and Halgerda albocristata. The Okenia has four pairs of lateral dorsal appendages and a single central one just anterior to the gills. There is no anterior ventral vee shaped groove on the foot so we have identified it as Okenia hallucigenia. Finds that are additions to our Sunshine Coast Sea Slug Survey list were: Ceratosoma sp. 02 and Trapania reticulata Rudman, 1987.
Taxonomic Diversity:
– 24 of the 31 species sighted were dorids.
– If diet is considered then 23 of the 31 species sighted are spongivores.
Key to symbols
+++ New Species
TOTAL SPECIES SIGHTED: 31
SPECIES LIST – ALPHABETICAL
Aegires flores 1/-
Ardeadoris rubroannulata 1/-
Bulbaeolidia alba -/1
Ceratosoma sp. 02 1/- +++
Chromodoris elisabethina 12/7
Chromodoris kuiteri 3/1
Chromodoris lochi 1/-
Chromodoris strigata 1/-
Colpodaspsis thompsoni -/1
Dermatobranchus rodmani -/1
Dermatobranchus semilunus 1/-
Dermatobranchus tuberculatus -/1
Doriprismatica atromarginata 10/13
Glossodoris rufromarginata 1/2
Goniobranchus splendidus 3/-
Halgerda albocristata 1/-
Hypselodoris decorata 1/-
Hypselodoris jacksoni 1/-
Hypselodoris maculosa 1/-
Mexichromis trilineata 2/4
Okenia hallucigenia -/1
Phyllidia elegans 1/1
Phyllidia cf. elegans 1/-
Phyllidia varicosa -/1
Phyllidiella lizae 2/1
Phyllidiella pustulosa 3/2
Phyllidiopsis burni 1/-
Sagaminopteron psychedelicum -/1
Thuridilla cf. splendens -/1
Trapania reticulata 1/- +++
Verconia simplex 1/-
SPECIES GROUPED BY ORDER
Nudibranchia
Aegires flores 1/-
Ardeadoris rubroannulata 1/-
Bulbaeolidia alba -/1
Ceratosoma sp. 02 1/- +++
Chromodoris elisabethina 12/7
Chromodoris kuiteri 3/1
Chromodoris lochi 1/-
Chromodoris strigata 1/-
Dermatobranchus rodmani -/1
Dermatobranchus semilunus 1/-
Dermatobranchus tuberculatus -/1
Doriprismatica atromarginata 10/13
Glossodoris rufromarginata 1/2
Goniobranchus splendidus 3/-
Halgerda albocristata 1/-
Hypselodoris decorata 1/-
Hypselodoris jacksoni 1/-
Hypselodoris maculosa 1/-
Mexichromis trilineata 2/4
Okenia hallucigenia -/1
Phyllidia elegans 1/1
Phyllidia cf. elegans 1/-
Phyllidia varicosa -/1
Phyllidiella lizae 2/1
Phyllidiella pustulosa 3/2
Phyllidiopsis burni 1/-
Trapania reticulata 1/- +++
Verconia simplex 1/-
Cephalaspidea
Colpodaspsis thompsoni -/1
Sagaminopteron psychedelicum -/1
Sacoglossa
Thuridilla cf. splendens -/1
Umbraculoidea
–
Pleurobranchoidea
–