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Observers
Dave Donnelly
Pete Constable
Kelly
O'Sullivan
Chris Lekos
Bronwyn Dawes
Delwyn Dawes
Andrew Maxwell
Dave Burton
Tony Mitchell
Jo Denis
Jason Caruso
Deanne Jones
Fiona Stevens
Su Jewell
Leanne
Maffesoni
Craig Dickman
Stephen Robey
Ms Robey
Phil Tubb
Lyn Wain
Jenny Robb
+ 21 others
from the Marine Discovery Centre, Eden
Website
produced by Simon Mustoe, AES
Applied Ecology Solutions Pty. Ltd.
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| On the weekend of May
21 and 22 the catamaran True Blue out of Merimbula,
N.S.W was jointly chartered by myself (David Donnelly)
and Jenny Robb of the Marine Discovery Centre, Eden for
a wildlife trip to the continental shelf. Much interest
was generated for this trip due to the aggregation of
large numbers of Sperm Whales in the area over the
preceeding weeks. Representatives from several state and
federal government agencies including Department of
Environment and Heritage, New South Wales Parks and
Wildlife, Department of Sustainability and Environment
and Parks Victoria were onboard. Also represented were
Melbourne Aquarium, Zoos Victoria and ORRCA.
Unfortunately no Sperm Whales were recorded during this
weekend.
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Cetacean sightings. Track lines are shown in
blue (Saturday) and orange (Sunday) |
Map from the CSIRO
Marine website showing the 6 day average Sea
Surface Temperature off SE Australia - the 200m
contour is shown.
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| Highlights:
Seven species of cetacean were sighted over the two days
including a pod of Pygmy Killer Whales (a local
speciality) and beaked whales.
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| DAY 1
- 21 May 2005
Departed port at 7am, forecast was for a fine day with winds
from the south west at 10-15 knots. Sea conditions started off
with a 1-1.5m south easterly swell with slight wind disturbance
on the surface. Sea conditions improved as the day progressed
with the swell dropping steadily throughout the day and sea
surface conditions becoming oily calm. Wind strength remained
below 10 knots for the day. Water temperature ranged from 19
degrees celsius close to coast to 21 degrees celsius along the
continental shelf. Bird life was present but not prolific with
just hand full of species documented including Black Browed
Albatross, Wandering Albatross (Juvenile) and Yellow Nose
Albatross. As conditions improved, current lines became visible
on the surface with many “by the wind sailors” noted. Fish
appeared plentiful on the surface, the main species being
Stripey Tuna, Frigett Mackerel and Sauries. One 4-5 ft Blue
Shark was also recorded. Australian Fur Seals were recorded on
and off throughout the day in groups of 1 -5 individuals. There
were two highlights for this day the first an encounter with a
large pod of Risso’s Dolphins associating with Oceanic
Bottlenose Dolphins and another unconfirmed species possibly
Melon Head or Pygmy Killer Whales. The next highlight was coming
across a pod of around 25-30 Pygmy Killer Whales. Saturday ended
with a magnificent sunset, no wind and a pod Common Dolphins on
and around the bow.
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 [Click to enlarge]
Pygmy Killer Whale, Jason Caruso |
[Click to enlarge] Pygmy Killer Whale, Phil Tubb |
 [Click to enlarge]
Risso's Dolphin, Phil Tubb |
[Click to enlarge] Yellow-nosed Albatross, Jason Caruso |
[Click to enlarge] Shy Albatross, Jason Caruso |
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| NOTE, ALL IMAGES ON THIS SITE ARE
COPYRIGHT. |
| DAY
2 - 22 May 2005
Departure again was at 7am, the forecast for the day was the
same as the previous day. Sea conditions had improved overnight
with almost no swell present but wind disturbance had increased
with some minor white caps. The water conditions improved
quickly on this day and oily calm conditions prevailed for the
better part. Sea temperatures were as per the previous day. Our
course for the day concentrated efforts just on and just inside
the shelf as apposed to the previous day which found us
extending our survey far beyond the drop off where sea life was
less prolific. This course kept us around current lines that
became visible just after lunch time. Many more birds and
schools of fish were observed on this day suggesting that
possibly productivity was greater inside the shelf area. Again
there were two highlights on this day, the first being an
encounter with two beaked whales. The two whales remained just
below the surface around the boat with just their foot prints
and pale coloration visible. At one stage the dorsal fins of
both animals broke the surface but their heads remained
submerged making it extremely difficult to make an accurate
identification. The second highlight on this day was the
sighting of a Minke/Humpback association. The two whales
remained close to each other for the majority of the encounter
with the two of them at times as close as less than 5 metres.
Sunday again ended with a spectacular sunset and Common
Dolphins.
Thanks to True Blue and our skipper Matto for a great two
days on the water.
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POSITION
DATA
| ID |
Latitude |
Longitude |
Species |
Number |
Date |
| 1 |
-36.9167 |
150.2667 |
Risso's Dolphin |
50 |
21/05/2005 |
| 2 |
-36.9167 |
150.2667 |
Oceanic Bottlenose Dolphins |
5 |
21/05/2005 |
| 3 |
-36.9167 |
150.2667 |
Prob. Pygmy Killer Whale |
3 |
21/05/2005 |
| 4 |
-36.85 |
150.3833 |
Minke Whales |
2 |
21/05/2005 |
| 5 |
-36.85 |
150.3833 |
Beaked Whale |
1 |
21/05/2005 |
| 6 |
-37.2 |
150.3333 |
Pygmy Killer Whale |
27 |
21/05/2005 |
| 7 |
-37.0667 |
150.2833 |
Humpback Whale |
1 |
21/05/2005 |
| 8 |
-36.95 |
150.0333 |
Common Dolphins |
30 |
21/05/2005 |
| 9 |
-36.9 |
149.9833 |
Common Dolphins |
25 |
22/05/2005 |
| 10 |
-36.9833 |
150.3167 |
Humpback Whale |
2 |
22/05/2005 |
| 11 |
-37 |
150.3333 |
Minke Whale |
1 |
22/05/2005 |
| 12 |
-37.1667 |
150.4167 |
Beaked Whale |
2 |
22/05/2005 |
| 13 |
-36.9667 |
150.3333 |
Minke Whale |
3 |
22/05/2005 |
| 14 |
-36.9667 |
150.3333 |
Humpback Whale |
1 |
22/05/2005 |
| 15 |
-36.9333 |
150.1667 |
Common Dolphins |
15 |
22/05/2005 |
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