Today, I didn't see any large corals that were full on bleaching. About 1% were showing stress (paler than usual or with bleaching portions) or with recently dead patches. I didn't come across many leathery soft corals, most were alright. The situation wasn't as bad as what I saw during mass coral bleaching in 2016.
There are not a lot of hard corals on Small Sisters Island. Most of the hard corals I saw were alright. Only a few had bleaching or dead portions. The situation seems similar to our last survey here in May 2018.
Here's a compilation of some of the hard corals I saw today, with a ruler for further study by others.
Most of the leathery soft corals that I saw were alright, although a few small colonies were bleaching. None of the other cnidarians that I saw were bleaching. I saw several Giantcarpet anemones, a few Cerianthids, one Asparagus flowery soft coral. Zoanthids were abundant under the jetty, and there were many large patches of Sea matzoanthids. There were also many Posy anemones in the smaller lagoon.
I came across a small Fluted giant clam (about 15cm), the first time I've seen one at this spot.
Giant clams can also suffer from bleaching, so it was a relief to see that this clam is doing alright.
I saw a Zebra moon snail among the blooming Sargassum only because it was moving so fast. When it stopped moving, it looks just like the little round floats of the seaweed!
Chay Hoon spotted weird slugs among the Sargassum! They are tiny sea hares!
In the sandy big lagoon there were several Common sea stars (as well as many
Oval moon snails). Under the jetty there were a few feather stars. Scattered
on the shore were many Black long sea cucumbers.
There were also many of the usual colourful crabs.
The rest of the team saw amazing fishes. I
couldn't take a good photo of those I saw. There were lots of Silversides as
usual. As well as other common small reef fishes. Marcus saw this pretty juvenile angelfish.The Sargassum is already starting to bloom on this little island.
There wasn't much trash on the high shore. The usual plastic bottles, plus what looks like an airconditioner? There were also two huge flat slabs on wax half buried in the sand in the lagoon. We didn't come across any nets or traps.
At sunrise, paddlers in several large dragonboats and smaller kayaks quickly passed around Small Sisters Island.
The two Sisters Islands are now designated as a Marine Park and managed by NParks. While Big Sister's Island is open to the public, Small Sister's Island is closed to visits and set aside for research. Our survey today was done with permission from NParks.
More about the Sisters' Islands Marine Park on the blog and facebook page.
Photos by others on this trip
Chay Hoon
Marcus Ng
Loh Kok Sheng
Jianlin Liu
Other shores surveyed
Vincent Choo checked up a Changi shore on 20 Aug
Richard Kuah also surveyed a Changi shore on 20 Aug.
Chay Hoon checked up on East Coast Park on 19 Aug
Vincent Choo was also at East Coast Park on 19 Aug
Richard Kuah surveyed Punggol Point on 18 Aug