Dive Report

14-08-2021 Nudi Ledge

Aug 14, 2021

DAY/DATE

Saturday

14/08/2021

SITE/S

Nudi Ledge
Currimundi Reef

PARTICIPANTS

Terry, David

TYPE

Subtidal

 

MODE

Boat Dives

 

VESSEL

Rebel II

 

DIVE

1

2

SITE/S

Nudi Ledge

Nudi Ledge

SPECIES #

25

23

DURATION

83 Min

77 Min

DEPTH/RANGE

14-17m

14-17m

TEMP.

20C

20C

VIS.

15+ m

15+ m

SURGE

Nil

Nil

CURRENT

Nil

Nil

COMMENTS & OBSERVATIONS

The trip up the Pumicestone Passage from boat ramp to bar was taken with care as most of the beacons have recently been replaced with buoys and in different positions. The bar crossing seems to have shifted south a little but we crossed both ways without incident. Yesterday’s great conditions and excellent visibility on the Gneerings were duplicated here today. A satisfying species count was compiled. It was a Sagaminopteron ornatum kinda-day with mostly small specimens wherever we looked. Tambja morosa was an uncommon find. Nearly all of the Bornella anguilla seemed to be preferring to feed upon the finer looking Pennaria sp. hydroids rather than the coarser Aglaophenia sp. hydroids. A Chromodoris elisabethina specimen was photographed with many more longitudinal black lines on its dorsum than usual.

Taxonomic Diversity:
22 of the 31 species sighted were dorids (just over 2/3 the total) comprising 5 x phanerobranchs, 4 x porostomes (all belonging to Phyllidiidae) and 12 x cryptobranchs (all belonging to Chromodorididae). The other 9 species comprised 3 x aeolids, 1 x dendronotid, 1 x arminid, 3 x cephalaspidean and 1 x umbrella-shelled sea slug. If diet is considered then 21 of the 31 species sighted are spongivores.

Our Historical Data:
– This excursion brings the survey number to 108 at this site since 30/10/2011
– Last surveyed on 08/06/2021
– 218 species have been recorded here

Key to symbols
+++ New Species
+ First time sighted at this site
# Most commonly sighted at this site with %

TOTAL SPECIES SIGHTED: 31

 

SPECIES LIST – ALPHABETICAL

Bornella anguilla 3/4
Chromodoris elisabethina 6/4
Chromodoris kuiteri 7/1
Dermatobranchus oculus -/1
Diversidoris sp. 01 1/- +
Doriprismatica atromarginata 7/5 #98%
Flabellina lotos 3/1
Glossodoris rufomarginata 3/1
Glossodoris vespa 4/-
Goniobranchus geometricus 1/1
Goniobranchus splendidus 1/2
Goniodoridella savignyi  -/2
Hexabranchus sanguineus 1/3
Hypselodoris bullockii 1/-
Hypselodoris jacksoni 4/2
Hypselodoris obscura 1/1
Hypselodoris sagamiensis 1/-
Mariaglaja inornata 1/-
Phyllidia ocellata  -/1 #89%
Phyllidia picta  1/-
Phyllidiella lizae  2/-
Phyllidiella pustulosa 4/3 #94%
Phyllidiopsis burni 1/-
Pleurolidia juliae 1/1
Pteraeolidia semperi 1/1
Roboastra luteolineata 1/4
Sagaminopteron ornatum 21/5 #84%
Sagaminopteron psychedelicum 1/1
Tambja morosa -/1 +
Tambja tenuilineata -/1
Tylodina corticalis -/1

SPECIES GROUPED BY ORDER

Nudibranchia
Bornella anguilla 3/4
Chromodoris elisabethina 6/4
Chromodoris kuiteri 7/1
Dermatobranchus oculus -/1
Diversidoris sp. 01 1/-
Doriprismatica atromarginata 7/5
Flabellina lotos 3/1
Glossodoris rufomarginata 3/1
Glossodoris vespa 4/-
Goniobranchus geometricus 1/1
Goniobranchus splendidus 1/2
Goniodoridella savignyi  -/2
Hexabranchus sanguineus 1/3
Hypselodoris bullockii 1/-
Hypselodoris jacksoni 4/2
Hypselodoris obscura 1/1
Hypselodoris sagamiensis 1/-
Phyllidia ocellata  -/1
Phyllidia picta  1/-
Phyllidiella lizae  2/-
Phyllidiella pustulosa 4/3
Phyllidiopsis burni 1/-
Pleurolidia juliae 1/1
Pteraeolidia semperi 1/1
Roboastra luteolineata 1/4
Tambja morosa -/1
Tambja tenuilineata -/1

Cephalaspidea
Mariaglaja inornata -/1
Sagaminopteron ornatum 21/5
Sagaminopteron psychedelicum 1/1

Sacoglossa

Umbraculoidea
Tylodina corticalis -/1

Pleurobranchoidea

DIVE IMAGES GALLERY

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