| |
Milne Bay
Region
Discovery Bay
Dive Log, PNG
March 2006

| Date: 18 March |
TI: 1030 |
TO: 1120 |
Max Depth: 20m |
| Divers:
Eibes,
Becky, Sharman, Sylvie
|
| Date: 18 March |
TI: 1205 |
TO: 1255 |
Max Depth: 22m |
| Divers: Eibes,
Katie, Rebecca, Starrlight |
| Date: 19 March |
TI: 0930 |
TO: 1020 |
Max Depth: 24m |
| Divers:
Kitty,
Paul, Michel, Orla |
| Date: 19 March |
TI: 1220 |
TO: 1310 |
Max Depth: 24m |
| Divers: Paul,
Kitty, Heather, Sharman |
The wreck in Discovery Bay sits in a muddy substrate and rises about 3
meters above the surface. The ship has become a popular habitat for anemone
fish, which demonstrated their territorial behavior with our divers by
nipping at our masks when we came too close to their homes. There wer e also
fields of large urchins scattered throughout the wreck. Most of the fish we saw
were small, most likely juveniles. We saw lionfish, three species of
pipefish, cardinal fish, groupers, fusiliers, jacks, gobies, filefish, and
all three life stages of harlequin sweetlips. Oysters covering the sides of
the ship blended in with the muddy colors of the outskirts of the wreck
surrounded by seagrass beds.
The wreck has proved to be a suitable substrate for coral recruitment.
Acropora was the most common coral genus observed on the wreck. Many corals,
including Stylophora, Pachyseris, Pocillopora, Seriatorora, and
Acropora, were bleached, especially in the shallow areas. Several
anemones were also bleached.
There were no currents and the visibility was around 7 meters.
Sullivan Patch
Dive Log, PNG
April
2006

| Date: April 3rd |
TI: 1055 |
TO: 1145 |
Max Depth: 30m |
| Divers:
Starrlight, Eibes, Becky, Orla,
Rebecca, Katie |
| Date: April 3rd |
TI: 1215 |
TO: 1315 |
Max Depth: 33m |
| Divers:
Paul, Michel, Sharman, Heather,
Carol, Kitty |
| Date: April 3rd |
TI: 1615 |
TO: 1740 |
Max Depth: 10m |
| Divers:
Michel, Orla |
This sea mount in the middle of Milne Bay consisted of
a fairly steep slope, almost vertical for the first 15m and
then became a gradual slope to the sandy botto m.
This reef system was almost completely dead with 1% hard coral coverage
and many rubble patches. The state of the reef is probably due to a
recent Crown of Thorns outbreak and
repeated anchor damage by dive boats according to a local dive operator, Bob
Halstead on 'Talita'. Most of the dead Acropora tables and
other coral colonies have been overgrown by algae and soft coral, however some large
Diploastrea colonies and live
Galaxea colonies were observed. The dominating soft coral included Xenia,
Sarcophyton and palm tree.
There was an abundance of fish life with approximately 1000 small
mackerel
schooling with deep bodied fusiliers, Spa nish mackerel, dogfish tuna, big
eye trevally pairing one dark and one white, unicorn fish and surgeonfish, cornet
fish, groupers, scrawled filefish, anthias, damselfish, Napoleon wrasse one of which had a small yellow jack
swimming with him and spine cheek anemone fish in a red bulb anemone. Also a
blue spotted ribbon-tail ray along with a large grey reef shark with 15 small
mackerel schooling beneath him, a white tip reef shark resting on the bottom
and a blacktip reef shark.
Invertebrates observed included 3 sea cucumbers, 2 nudibranchs, crinoids
and many diadem
sea urchins.
No current was experienced on any of these dives and
visibility was 30m.
Raven Channel Dive Log, PNG
March 2006

| Date: March 23rd |
TI: 1350 |
TO: 1435 |
Max Depth: 20m |
| Divers:
Carol,
Michel, Orla, Becky, Sharman
|
| Date: March 23rd |
TI: 1530 |
TO: 1620 |
Max Depth: 24m |
| Divers:
Starrlight,
Katie, Paul, Eibes, Sylvie
|
| Date: March 23rd |
TI: 1630 |
TO: 1720 |
Max Depth: 20m |
| Divers:
Heather,
Michel, Orla, Rebecca, Carol
|
| Date: March 24th |
TI: 0830 |
TO: 0920 |
Max Depth: 5m |
| Divers:
Heather,
Rebecca, Orla, Sylvie, Becky, Katie
|
| Date: March 24th |
TI: 1040 |
TO: 1130 |
Max Depth: 9m |
| Divers:
Kitty,
Paul, Sharman
|
| Date: March 24th |
TI: 1320 |
TO: 1410 |
Max Depth: 9m |
| Divers:
Heather,
Katie, Becky, Orla, Sylvie
|
| Date: March 24th |
TI: 1515 |
TO: 1545 |
Max Depth: 15m |
| Divers:
Paul,
Kitty, Sharman, Rebecca, Starrlight
|
| Date: March 25th |
TI: 0830 |
TO: 0920 |
Max Depth: 9m |
| Divers:
Paul,
Starrlight, Heather, Sharman, Sylvie
|
| Date: March 25th |
TI: 0950 |
TO: 1040 |
Max Depth: 9m |
| Divers:
Kitty,
Katie, Becky, Orla |
| Date: March 25th |
TI: 1120 |
TO: 1210 |
Max Depth: 9m |
| Divers:
Paul,
Starrlight, Rebecca, Sharman
|
| Date: March 25th |
TI: 2010 |
TO: 2100 |
Max Depth: 23m |
| Divers:
Paul,
Katie, Michel, Orla, Rebecca
|
| Date: March 26th |
TI: 0715 |
TO: 0800 |
Max Depth: 30m |
| Divers:
Starrlight,
Eibes, Carol, Kitty, Sylvie
|
| Date: March 26th |
TI: 1110 |
TO: 1200 |
Max Depth: 9m |
| Divers:
Heather,
Rebecca, Kitty, Sylvie
|
| Date: March 26th |
TI: 1355 |
TO: 1455 |
Max Depth: 5m |
| Divers:
Paul,
Katie, Becky, Starrlight, Carol
|
| Date: March 25th |
TI: 1510 |
TO: 1600 |
Max Depth: 22m |
| Divers:
Carol,
Eibes, Michel, Sharman, Rebecca
|
The ship has visited this reef before and named it magic spot and we were
all pleased to see this truly was still a magic spot! This was also to be
the site of our Vitareef study in Papua New Guinea this time.
Most dives made a loop around the relatively small reef patch and then moved
up to the shallows and the Vitareef dives were concentrated in a particular
area. The composition of this reef was a shallow platform at 4m which sloped
down to a sandy bottom at 40m.
Hard
coral
coverage was 10% in some areas increasing to 100% in other areas.
There was a great diversity of corals particularly Acropora, Seriatopora,
Turbanaria and many large Porites heads. The coral was in incredibly good condition, there was only
some bleaching on Seriatopora at 10m. White band disease was seen on
a Porites colony and red band disease on Pachyseris and
Hydnophora. There
were also some significant rubble patches in the shallows. Algae cover
consisted of some filamentous and fine branching dichotomous green
algae on the reef top with approximately 5% Caulerpa and Halimeda
in some areas.
Fish life included 3 white tip reef sharks, one of which was 6ft long.
Schools
of 50 midnight snappers, 30 black snappers,
500 blue streak fusiliers, 100 deep-bodied fusiliers, 100 tuna and big eye trevally. A school of 10-20
large bumphead parrotfish were repeatedly seen on several dives. There
were also giant
mackerel, batfish, large leopard gro upers, cornet fish, many sweetlips including giant, harlequin and
oriental, anthias, hawkfish, cardinal fish, coral hinds and Napoleon wrasse. There was
also an interesting blenny diversity on the reef top including Crossosalarias
macrospilus (triplespot) and Cirripectes chelamatus (L. musgrave
). We also sighted a cuttlefish, 2 lobsters, 1 large manta ray just below the surface,
an eagle ray, a devil ray and
many blue spotted ribbontail rays.
There was a great diversity of soft corals with Lobophytum,
Clavularia, Sinularia, Dendronephthya, Sarcophyton
and Heteroxenia. Also some
red seawhip colonies and seafans.
There was also a great abundance and diversity of invertebrates. Sighted
were 4 sea cucumbers - one was a sandfish and another was a metre long.
There
were three Tridacna
squamosa at 30cm and two at 15cm, two small clams approximately 15cm and
one
large empty shell on the reef top approximately 40cm .Three nudibranchs all
Philidia and Chromodoris, flatworms, sea squirts,
spaghetti
worms, ascidians and many varieties of sea urchins. There was a good diversity of sponges including
large
barrel sponges with 'finger' protrusions all over the sides, vase, encrusting and rope sponges, also some large bright yellow elephant ear
sponges. One great find was a trochus snail at 12cm diameter.
The night dive saw many hard and soft corals with their tentacles out
especially Turbinaria. There were many sleeping fish with some parrotfish
sleeping in mucous and two juvenile epaulette sharks plus corallivorous snails
eating on Porites.
Visibility was generally 10m. The current varied between dives from no current to a
relatively strong current.
| Date: March 25th |
TI: 0700 |
TO: 0750 |
Max Depth: 12m |
| Divers:
Eibes, Michel, Carol |
| Date: March 25th |
TI: 1020 |
TO: 1110 |
Max Depth: 15m |
| Divers:
Heather, Orla, Becky, Michel, Eibes |
| Date: March 25th |
TI: 1510 |
TO: 1610 |
Max Depth: 20m |
| Divers:
Starrlight, Rebecca, Sylvie, Sharman |
| Date: March 26th |
TI: 1630 |
TO: 1720 |
Max Depth: 10m |
| Divers:
Paul, Michel, Orla, Becky, Katie |
This reef was aptly named 'the lighthouse' by our crew due to the marker
light which is in the middle of this reef and must have been placed with
the utmost
care
because there is no obvious damage from the placement of the mast. This reef had a flat
platform top at 10m with some sand and rubble patches and then descended
by a steep wall to the depths.
This site was also very diverse. The dominating corals on the
platform top were Acropora and foliaceous Montipora,
with Porites dominating the wall. Also worth noting was a lot of Tubastrea
across the site. There was 20% hard coral coverage across the
whole site and the main coral condition appeared to be crown of thorns
damage.
There was a very high abundance of reef fish - bannerfish,
surgeonfish, unicornfish, 2 large pufferfish, 1 crocodilefish, mackerel,
several large Napoleon wrasse, trevallies, snappers, hawkfish, jacks, a cuttlefish, 2
white tip reef sharks, cornetfish and yellow goatfish. The wall had many anthias, damselfish,
batfish, parrotfish, wrasse and angelfish. On the reef top there were very high numbers of anthias
going crazy
spawning plus damselfish and chromis feeding. There was also 1 very large pufferfish
eating Pachyseris, being quite destructive in her eating habits.
The same two hawksbill turtles were sighted on two dives, one 30 and one
50cm long.
They were not concerned by the divers' presence as they
carried on feeding and then moved away slowly to the surface. Between one
to eight crown of thorns were seen on each of the four dives here. On the positive side sighted
were 6 sea cucumbers, a tritons trumpet at 30cm, 2
giant clams at 30cm, lots of crinoids and brittlestars. There was mainly leather soft coral with patches of 80-100% on top and 10% on
the wall
- also large sea fans.
We had 2-4 knot currents
throughout the dives, varying in strength at different places on the reef.
In some
areas there was also a presence of multiple layers of thermocline
and visibility was generally 15m.
Julian Reef Dive Log, PNG
March 2006

| Date: March 27th |
TI: 2000 |
TO: 2050 |
Max Depth: 20m |
| Divers:
Carol,
Eibes, Starrlight, Becky, Sylvie |
| Date: March 28th |
TI: 0900 |
TO: 0945 |
Max Depth: 37m |
| Divers:
Paul, Eibes, Katie, Sylvie,
Sharman, Heather |
This reef had a flat profile on top and sloped
down to a wall. Hard coral coverage was 10-15% and dominant coral was
Acropora and the Fungidae. Generally the reef was
in very good condition. There was some bleaching over several
different genus including Galaxea, Porites, Acropora,
Pachyseris,
Montipora, Stylophora and Seriatopora. Yellow band disease was also
observed along with possible anch or damage in some areas.
There was a healthy fish population in this area
with barracuda, dog tooth tuna, trevally, schools of fusiliers, many
damsels and anthias. Also groupers, unicornfish, triggerfish and
anemonefish.
The reef had approximately a 5% cover of soft
coral with many barrel and elephant ear sponges. The reef was home
to many diadem sea urchins and a 40cm giant clam was seen.
The night dive saw many corals with their
tentacles out, many crinoids, a 10cm crab and a scorpion fish resting
on an elephant ear sponge. We also saw 2 white tip reef sharks who
were attracted by our flashlights and came within close range,
however due to it being a new moon we could only see them when they
came in our range of the flashlights so we had no idea where they
were at any other time which only added to the adrenaline rush.
No current was present on these dives and the
visibility was 30m on the first dive.
| Date: March 28th |
TI: 1020 |
TO: 1120 |
Max Depth: 22m |
| Divers:
Starrlight,
Michel, Orla, Rebecca, Becky |
| Date: March 28th |
TI: 1145 |
TO: 1235 |
Max Depth: 25m |
| Divers:
Carol,
Michel, Eibes, Sharman, Sylvie |
| Date: March 28th |
TI: 1400 |
TO: 1500 |
Max Depth: 10m |
| Divers:
Paul,
Kitty, Orla, Becky, Rebecca, Starrlight |
| Date: March 29th |
TI: 0900 |
TO: 0950 |
Max Depth: 12m |
| Divers:
Paul, Heather, Kitty, Orla,
Starrlight, Rebecca |
This was another reef flat which sloped off to a
wall. This was one of the most beautiful reefs
in terms of hard coral coverage that any of
us had ever seen with over 80% cover of hard coral, a picture perfect postcard reef. The reef was full with large tables of
Acropora stepping down the wall, large foliaceous Montipora and
Pachyseris. It was just exploding with corals. In the
small gaps between corals there were already new colonies
competing for space. It was a spectacular scene to see so many
colonies both new and old. There was some bleaching of Galaxea,
Porites, Pavona, Pocillopora, Acropora,
Pachyseris, Montipora, Seriatopora,
Leptoseris and Stylophora. Most bleaching
was at 20m. It was because of these observations that we decided to
do 2 bleaching transects on the Chesterfield reef section. Approximately 40% of the colonies
observed were either bleached or partially bleached. This perhaps had a lot
to do with the lack of current during the dives as cooler water was
not being brought through the reef - temperatures recorded at the
closeby ship's anchorage averaged 30 °C. There was evidence of some
possible anchor damage in some areas, also some overturned coral
colonies, particularly Acropora. We observed an interesting
Acropora possibly in the first stages of bleaching where a
third of the colony
was a fluorescent yellow and two thirds a dark green.

Fish populations were also good with all the
typical reef fish along with black and white and black snapper, 6
large Spanish mackerel and many jacks. Also a school of 30 great
barracuda which we saw from the surface and they began to circle.
Soft coral coverage was 5% with a higher concentration
in some patches and included Alaconids, Clavularia,
Sarcophyton, Lobophytum, and Dendronephthya. Also
observed were 3 Tridacna squamosa 1 at 30cm, 25cm and 10cm, 2
Phyllidia nudibranch, giant barrel sponges, many seafans,
sponges and tunicates.
There was no current on these dives and 20m visibility although some areas
had more plankton in the water decreasing the visibility.
| Date: March 29th |
TI: 1020 |
TO: 1110 |
Max Depth: 36 m |
| Divers:
Paul,
Michel, Carol, Katie, Sharman |
| Date: March 29th |
TI: 1315 |
TO: 1415 |
Max Depth: 24 m |
| Divers:
Heather,
Eibes, Orla, Starrlight, Sylvie |
This area of patch reef had a shallow crest
top at 3m and then dropped with a wall to 40m. The hard coral
coverage varied at different depths with 70% cover on the crest, 50%
between 3-10m and 10-20% at 10-25m. The corals seemed to be more
diverse than Chesterfield reef and dominant hard coral included
Acropora, Diploastrea, Hydnophora and Montipora
on the wall. The main conditions affecting the coral were
bleaching and damage to tissue and skeleton. Bleaching affected
Acropora a nd Pocillopora above 15m, with Pachyseris
and Leptoseris being affected at 15-25m. White band disease
along with red band disease on an Acropora were also observed. This
was another beautiful site with large, practically unblemished
colonies and large Acropora plates with some rubble fields on
the crest.
Again the abundance of fish was also very good
here with all the common reef fish in good numbers. Also observed
were 2 schools of approximately 50 barracuda, 5 moray eels,
mackerel, dog tooth tuna, black and white snappers, a grey reef, a
white tip and a black tip reef shark. Also a large marble grouper at
1m long and a large needlefish jumping out of the water which was seen by
the tender.
The soft coral was mainly found on the wall along
with sea fans and many sponges including some large barrel sponges.
7 giant clams were observed and their sizes ranged between 10cm and
100cm.
There was a slight current and visibility was 20m
Dobu Island Dive Log, PNG
March and April 2006

| Date: March 31st |
TI: 1030 |
TO: 1145 |
Max Depth: 6m |
| Divers:
Kitty, Heather, Sharman, Sylvie |
| Date: March 31st |
TI: 1400 |
TO: 1545 |
Max Depth: 6m |
| Divers:
Starrlight, Paul, Becky, Katie |
| Date: March 31st |
TI: 1615 |
TO: 1740 |
Max Depth: 4m |
| Divers:
Carol, Rebecca, Michel, Orla |
| Date: April 1st |
TI: 1315 |
TO: 1415 |
Max Depth: 3m |
| Divers:
Heather, Eibes, Carol, Becky |
| Date: April 1st |
TI: 1445 |
TO: 1545 |
Max Depth: 4m |
| Divers:
Paul, Starrlight, Rebecca, Orla,
Michel |
| Date: April 1st |
TI: 2030 |
TO: 2115 |
Max Depth: 6m |
| Divers:
Heather, Starrlight, Michel,
Sharman, Orla |
Dobu Island is a volcanic island with hydrogen sulphide bubbling thro ugh the volcanic vents underwater. The stones surrounding these vents
were in some places
too hot to touch and mirages of heat spread across the water. In certain areas
you could hear the rumbles of activity.
This was a patch reef with bommies and fields of
seagrass. This was a surprisingly diverse and healthy ecosystem,
with lush seagrass beds home to many weird and wonderful creatures.
Overall there was less than 5% hard coral coverage, with Porites
dominating. The main factors affecting the health of the reef were
sedimentation and algae overgrowth on some coral. There was some
bleaching of Seriatopora and one case of white band disease but
generally corals were healthy. We saw healthy large Acropora fields, large
Porites,
Platygyra and Lobophyllia colonies. One Lobophyllia
was 3 by 2 metres across. A diverse population of corals were observed.
There was between 10% and 20% algae cov er in some areas including Caulerpa,
Enteromorpha,
Padina and some less significant macroalgae.
There was a very high abundance of lionfish at this site. Approximately thirty were observed including 3 different species.
In this area we saw most of the common reef fish including fusiliers, damselfish,
triggerfish, gobies, lizard fish and cornet fish. Also worth noting were
a school of 10 jacks, many reticulated dascyllus, several prawn gobies
and a sole in the sand. The anemone fish we saw included spine cheek
and clown fish. Other fish life observed included a blue spotted ribbontail
ray, eagle ray, stingrays and moray eels. Amongst the seagrass were many sandperches,
juvenille triggerfish and
many unidentified small fish. Also seen wa s 1 cuttlefish that was so well
camouflaged against the sand but after a while it moved away turning a dark brown as he
traveled. We came to this area in search of seahorses and cowfish, we
knew they were in the area, but we didn't find any. However we were rewarded with so many other
sights of amazing and unusual life forms.
Soft coral coverage was less than 5% mainly of Sarcophyton.
There were some very unique unidentified sea cucumbers including 1 2m
long retractable, giant clams varying between 10-20cm. Two of
the smaller clams were nestled in a Porites. Also seen were
several nudibranchs, flatworms, brittlestars,
barrel sponges, starfish, some of which were damaged from the heat of
the vents. There were also cleaner shrimps, many long spined sea urchins,
corallivorous snails,1 trochus shell and 2 beautiful tiger cowries still with animals present
and many jellyfish in polyp form. One 20cm crown of thorns was
also seen on a night dive.
There was no current on any dives and visibility was
approximately 4 meters.
Shortland Reef Dive Log, PNG
April
2006

| Date: April 10th |
TI: 0940 |
TO: 1020 |
Max Depth: 25m |
| Divers:
Starrlight,
Michel, Katie, Becky, Sharman
|
| Date: April 10th |
TI: 1120 |
TO: 1205 |
Max Depth: 27m |
| Divers:
Paul,
Michel, Orla, Eibes, Heather
|
These dives took place in the passage of the Shortland reef atoll. The first
dive explored the edge of the reef which formed a steep wall from 10 m depth
down to about 30 m depth with a sandy bottom. The deeper reef had a hard
coral coverage of about 5%, while the shallows had a hard coral coverag e of
up to 10%. The dominant coral genus was Pachyseris, which formed many
large plates. The divers observed many recently dead or turned over
Acropora tables. Bleaching was observed on a colony of Pachyseris
at about 20 m depth. There was very high soft coral coverage in the shallows
made up of sea fans, leather, and palm corals. The fish life at the edge of
the reef was overwhelming. The divers encountered a school of more than 500
small tuna, large batfish, Spanish Mackerels, schools of fusiliers, giant
Napoleon wrasse, large sweetlips, a 3 meter-long reef shark, groupers of
all sizes, and reef fish swimming in and out of the corals. Other
observations included about 20 sea cucumbers, one giant clam, and many
elephant ear sponges. The visibility was about 10 m and there was a slight
current throughout the dive.
The second dive traveled through the large coral bommies at about 20 m
depth. The hard coral coverage was 5-15% with the domin ant coral genera
being Acropora, Tubastrea, and Pachyseris. Overall the corals
were in good condition. No bleaching was observed, but white band disease
was noticed on a colony of Acropora which had left 95% of it dead.
The soft corals were abundant and included many sea fans, leather
coral, sea whips, palm coral and Xenia. The algae Halimeda
covered about 15% of the reef substrate. Fish observations included five
barramundi cod, four large leopard groupers, a humpback grouper, a coral
grouper, two large red snappers, anthias, fusiliers, about ten coral hinds
and a 2 m-long grey reef shark. The divers observed a huge bubble tentacle
sea anemone with 16 anemone fish, a sea cucumber, two giant clams, and
crinoids. The visibility was about 10 m and there was very little current.
Overall this area of Shortland Reef seemed to be a healthy reef habitat with
corals in good condition, abundant fish life. Keystone invertebrate species
such as sea cucumbers and giant clams were also good signs for the reef.
| Date: April 10th |
TI: 1340 |
TO: 1430 |
Max Depth: 21m |
| Divers:
Kitty, Sharman, Becky, Rebecca,
Sylvie |
This section of the Shortland reef atoll was booming with life, both
above and below the surface. While the divers were submerged, witnessing
a high diversity of corals in almost perfect condition, 3 hawksbill
turtles,
a green turtle, a ray, sharks and plentiful reef fish, the
tender in the zodiac observed sea turtles surfacing to breathe and rays
and fish jumping. Other sightings by the divers included sea cucumbers,
giant clams, elephant ear sponges and lobsters.
The hard coral coverage was about 5% and the reef was also filled with
soft corals and filamentous algae. Bleaching was observed on
Stylophora at 15 metres, Acropora and Seriatopora at 10
metres. The visibility was about 15 metres, and there was a slight
current during the last 10 minutes of the dive.
Overall, this was a wonderful reef, full of life, colors and activity.
The dive was enjoyed thoroughly by all the divers and even the tender!
| Date: April 10th |
TI: 1500 |
TO: 1550 |
Max Depth: 15m |
| Divers:
Starrlight,
Michel, Orla, Katie, Carol |
This dive ventured off Byron Island to explore the Shortland Reef
lagoon floor with coral bommies interspersed on the sandy bottom.
The dominant coral genus was Porites. The divers observed a
school of about 30 batfish, Napoleon wrasse, fusiliers, a giant
porcupine fish, lionfish, giant sweetlips, and many schools of
striped catfish. A green turtle with a 50 cm carapace length was
sighted on this dive. Three giant clams were also observed. The
visibility was less than 10 m, and there was no current.
Manuga
Reef Dive Log, PNG
April
2006

| Date: April 13th |
TI: 1130 |
TO: 1220 |
Max Depth: 34m |
| Divers:
Heather, Becky, Sharman, Orla, Michel |
| Date: April 13th |
TI: 1330 |
TO: 1420 |
Max Depth: 34m |
| Divers:
Paul,
Carol, Starrlight, Eibes, Sylvie |
| Date: April 13th |
TI: 1500 |
TO: 1545 |
Max Depth: 34m |
| Divers:
Kitty, Eibes, Michel, Rebecca, Katie |
An amazing aspect of this reef was its topography. The steep wall
surrounding the shallows is made up of caves, overhangs and large chimney
caverns. The activity of the former volcano had created an amazing structure
which lit up with the sunlight penetrating through the caverns.
The hard coral coverage was 5-10% on the wall, with the dominant genera
being P orites,
Acropora and Diploastrea. Although live coral was sparse, they
appeared to be in healthy condition. Bleaching was observed on Pachyseris,
Seriatopora, Pocillopora, Acropora, Goniastrea and Turbinaria at
depths between 3 and 12 metres. Whiteband disease was also observed on
Goniastrea and Acropora. The shallows looked very healthy and
full of branching and table Acropora growing right up to the surface.
This reef had an especially high abundance of algal growth on the wall. In
some areas Halimeda had gained up to 75% coverage. There was also a
considerable amount of green and red filamentous algae growth surrounding
and sometimes overgrowing the live coral.
The fish life on this reef was diverse and plentiful. The divers saw
whitemargin unicornfish, bignose unicornfish, moustache triggerfish, bluefin
trevally, yellowspotted burrfish, longface emperors, bumphead parrotfish,
butterflyfish, angelfish, batfish, trumpetfish, a school of about 1000
tessilated fusiliers, anthias, deep reef chromis, reticulated dascyllus,
redbanded wrasse, Napoleon wrasse, great barracuda, chevron barracuda,
large black snappers and strawberry, flagtail and pe acock
groupers. The divers also encountered several blue spotted ribbon rays, two
white tip reef sharks, two grey reef sharks, and a silvertip reef shark.
A hawksbill turtle of about 75 cm carapace length was observed swimming
quickly in the opposite direction of the divers and away from the reef.
Another unidentified turtle was observed on another dive.
A single crown of thorns starfish about 50 cm in diameter was seen on this
reef. Other invertebrate observations included diadem sea urchins, two giant
clams of 15 cm and 30 cm length, several nudibranchs, and one sea cucumber.
The soft coral coverage was less than 5% and included lace corals and sea
fans.
The water was crystal clear with a visibility of about 30 meters and
there was no current. All in all, the corals were not abundant but the
topography kept the divers in awe of a wonderful structure volcanic
force had created.
| |