At the beginning of the dive, we examined a deeper section of the
fringing reef at about 15-25m, which drastically differed from the
shallow reef. The deep reef has about 10% live coral coverage
dominated by Acropora species, 20% sand coverage, 30%
rubble, and 40% dead coral. In the shallower region, less than
10m, there was about 25% live coral coverage, about 25% dead coral,
and about 50% rock. There
is a high diversity of coral. Algae has overgrown many of the dead
corals. On our dive we saw no signs of bleaching or coral
diseases. Various soft corals were seen on the deeper section of
the reef.
Halimeda algae grew abundantly on the reef slope in the
deeper regions and coralline algae grew in the shallower areas. A
strange red fleshy algae grew on some live corals in the shallower
region.
There were small reef fish in the area, such as triggerfish, dartfish, damselfish, hawkfish, parrotfish, Moorish idols, and butterflyfish.
We did not see any big commercial fish in the area. It was also
very positive to see various
species of Sea Cucumbers were also seen on this dive.
We dove three separate times at Curtis Point. Each time we dove a slightly
different section of the reef, and each section varied dramatically.
On our first dive, we stayed in the shallower part of the reef
where there was a strong current pulling us along. The most common
coral genera on this dive was Porites. We saw lots of signs of
edge damage and some overgrowth of live coral by filamentous algae.
There were no signs of bleaching or coral disease on this dive. We
did see many new colonies. There were no large commercial fish species
on the reef, but many small reef fish. We saw a small lobster
peeking out of a hole next to a large moray eel. We counted 15 small
to medium sized
clams on this dive.
Our second dive
started in deeper water, and we worked our way to the shallower
reef. Most areas appeared to have about 10-20% of live coral
coverage, however the coverage was less on the top of the bommies.
Sponges overgrew many corals. Also, we saw many corals with
filamentous algae and edge damage. Algae covered about 25% of the
reef. There were three sea cucumbers and not many commercial fish
species.
On our third dive, we descended just south of the point and moved
to the north. At first, we saw only sporadic coral bommies with
large expanses of sand in between. As we swam further north, we
began to see larger
and larger coral patches extending deeper and deeper. We decided to
follow the coral tracts deeper and were rewarded with beautiful,
healthy and diverse corals, many soft corals swaying to and fro, and
plenty of large and rare commercial fish species. Trevally swam past
us, large groupers and snappers lurked in the distance. This place
looked drastically different from any other part of the Eretoka reef
system. It appeared much healthier and full of
life than any other area. It was a shame that we just discovered the
area and we needed to surface soon.
The wind and swell just picked up as we dove
this spot. Once under the surface, everything seemed much more
calm and collected. We started in a deeper wall area with about
40% coral coverage. On the shallower regions of the reef, the coral
coverage reduced to 15-20%. Many leather corals grew on the wall
section of the reef making up to 30% of the coverage in some
areas. There were also some sea fans and tree corals on the wall. In the shallowest section of the reef, mostly macroalgae and
filamentous algae covered up to 60% of the reef. At one point
during the dive, we saw a series of large bommies beginning at 20m
and going up to 8m. In between the bommies were coral rubble.
There was an intense surge in this area that might be responsible
for all the rubble accumulating in these areas.
This
dive site was a fringing reef. The bottom was composed mainly of coral
patches and sand. This particular site had a good diversity of coral in
particular Acropora and Porites. Unfortunately we found most
of the reef to be in a poor state as the island had sold the rights of their
reef to people who had removed most of the coral. This area also had a plentiful supply of the small reef
fish in particular many species of Damselfish and Angelfish.
This dive site was a fringing reef. The bottom
composition was a mixture of patch coral, rubble and sand. There was a
good diversity of corals mainly consisting of Acropora, Porites,
Diploastrea and Pavona. 40% of the coral coverage was live and
30% had algae cover. The coral was also observed to be suffering
from a high amount of sedimentation.
This area consisted of many typical reef fish; some
of the more significant fish included a Lionfish, Giant Moray Eel and a
school of Black Snapper. There were also a varied number of invertebrates
present including Corallimorphs, Anemones, Starfish, Feather Stars and
Crabs. Towards the end of the dive we saw this octopus moving from underneath a ledge.