Select Page

Dive Report

24-01-2022 La Balsa Park

Jan 29, 2022

DAY/DATE

Monday

24/01/2022

SITE/S

La Balsa Park

 

PARTICIPANTS

Julie, Terry & David

 

TYPE

Subtidal

 

MODE

Shore Entry

 

VESSEL

 

DIVE

1

 

SITE/S

La Balsa Park (Toilet Block Entry)

 

SPECIES #

17

 

DURATION

130 Min

 

DEPTH/RANGE

To 6.4 m

 

TEMP.

27 C

 

VIS.

To 1.5 m

 

SURGE

 

CURRENT

Usual tidal run

 

COMMENTS & OBSERVATIONS

The conditions offshore have not been conducive to pleasant diving of late (wind & swell), so we decided to dive the Mooloolah River, mainly to give our new camera rigs another workout. The tidal differential was not large so we opted for the toilet block entry. The visibility was up to 1.5m (2m if you call seeing a blur of hazy colour on your buddy’s equipment visibility). The usual subjects were there: Flabellina lotos, Goniobranchus daphne, Goniodoridella sp. 01 and Hypselodoris obscura. Plocamopherus ceylonicus, Thordisa albomacula and Tenellia sp. 47 were uncommon additions and gratifying to record.

Taxonomic Diversity:
13 of the 17 species sighted were dorids comprising 5 x cryptobranchs (contract gill into a pocket) and 8 x phanerobranchs (unable to retract gill) with the remaining 4 being aeolids.

Our Historical data:
– 81 surveys conducted at this site since the first on 22/03/2014.
– Last surveyed 24/07/2021
  227 species recorded by us at this site.
– Our most commonly recorded species at this site are: Hypselodoris obscura (89%), Goniodoridella sp. 1 (85%), Pteraeolidia semperi (81%), and  Goniobranchus daphne (77%).
Gymnodoris sp. 28 is a new sighting for us on the Sunshine Coast.
– Our sightings of Pteraeolidia semperi at this site peak in April, so sightings could be expected to increase over the coming months.
– Three of the species recorded on this survey, Plocamopherus ceylonicus, Tenellia sp. 47 and Thordisa albomacula, have only been sighted once previously at this site.

Guide to Symbols:
+++ New Species
+ First time sighted at this site
# Most commonly sighted at this site with %

TOTAL SPECIES SIGHTED: 17

 

SPECIES LIST – ALPHABETICAL

Flabellina lotos -10
Flabellina rubrolineata -1
Goniobranchus aureopurpureus
Goniobranchus daphne -10 #77%
Goniobranchus splendidus -2
Goniodoridella savignyi -1
Goniodoridella sp. 01 -11 #85%
Gymnodoris alba -2
Gymnodoris sp. 09 -2
Gymnodoris sp. 10 -3
Gymnodoris sp. 23 -1
Gymnodoris sp. 28 -1 +++
Hypselodoris obscura -4 #89%
Plocamopherus ceylonicus -1
Pteraeolidia semperi -2 #81%
Tenellia sp. 47 -1
Thordisa albomacula -1

SPECIES GROUPED BY ORDER

Nudibranchia
Flabellina lotos -10
Flabellina rubrolineata -1
Goniobranchus aureopurpureus
Goniobranchus daphne -10 
Goniobranchus splendidus -2
Goniodoridella savignyi -1
Goniodoridella sp. 01 -11 
Gymnodoris alba -2
Gymnodoris sp. 09 -2
Gymnodoris sp. 10 -3
Gymnodoris sp. 23 -1
Gymnodoris sp. 28 -1 
Hypselodoris obscura -4 
Plocamopherus ceylonicus -1
Pteraeolidia semperi -2 
Tenellia sp. 47 -1
Thordisa albomacula -1

Cephalaspidea

Sacoglossa

Umbraculoidea

Pleurobranchoidea

Anaspidea

DIVE IMAGES GALLERY

PUT CURSOR ON IMAGE FOR SPECIES NAME
CLICK IMAGE TO ENLARGE & SCROLL