20 November 2009

Works near Pulau Hantu until Dec 09

Repairs to a submarine cable will be done off Pulau Busing near Pulau Hantu.
More about the marine life at Pulau Hantu on the Hantu Blog by volunteers who conduct regular dives at this island. See also intertidal field trips to Pulau Hantu and photos of intertidal marine life at Pulau Hantu.

Repair of Submarine Cable west of Pulau Busing
from Port Marine Notice No. 166 OF 2009 dated 17 Nov 09
With effect from 22 Nov 09 to 31 Dec 09. 24 hours daily including Sundays and Public Holidays. At Sinki Fairway and its vicinity (see attached chartlet):

Repair works will be carried out by the barge “Intan 1807 ”. The barge will be held in position by 4 point anchoring system. The anchor’s position will be marked by yellow buoys, flashing yellow. Safety boats will be deployed in the vicinity of the work area to warn vessels to keep clear of the working area. Further general enquiries relating to the project can be directed to Mr Augustus Chan, the project manager at Tel: 8200 9409 (email: augustus@starhub.net.sg).

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Soil investigation works near Pulau Jong until Jan 10

Pulau Sebarok is our Port's 'petrol station' with major bunkering facilities. It lies just off Pulau Jong, which is among our last untouched Southern Islands.
The red marks indicate the planned soil investigation area. Are there plans to build something here? Will this affect the marine life on Pulau Jong?

Here's a view of Pulau Jong with Pulau Sebarok in the background.
Pulau Sebarok from Pulau Jong
Among the special marine life there is a Giant clam (Tridacna maxima) that may be the last of its kind in our waters. Below is a wider view of the wild Pulau Jong, behind it the bunkering facilities on Pulau Sebarok.
Pulau Jong and Pulau Sebarok

More about Pulau Jong and Pulau Sebarok
Soil Investigation Works off Pulau Sebarok
from Port Marine Notice No. 168 of 2009 dated 19 Nov 09

With effect from 23 Nov 2009 to 31 Jan 2010. Pulau Sebarok and its vicinity (see attached chartlet):

Soil investigation works will be carried out by means of sinking boreholes. Drilling will be carried out from the Jack-up platform “S F 2”. The Jack-up platform, with safety boats in attendance, will have a circular safety working area of 30 meters radius centered at the platform. A tugboat will be used for shifting the barge from one borehole location to another. Safety boat will be deployed in the vicinity of the working area to warn other craft of the project work. Further enquires relating to the project can be directed to Mr John Chai, the operation manager at Tel: 8223 2929 (email: kse2000@singnet.com.sg).

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Fireworks and more coastal works at Sentosa

Works on near Sentosa's natural underwater world will go on until Jun 10.
Reclamation at Sentosa for the Integrated Resort
Here's some of us checking out the seagrasses and other natural parts
of the affected shores earlier this month.

In addition, a fireworks display is planned for this area in December. Fireworks involve the use of chemicals which can have an impact on water quality.

Pyrotechnics display at Vivocity Waterfront
from Port Marine Notice No. 169 of 2009 dated 19 Nov 09.
Date & Time : 2 December 2009
Display period : 2100 hours to 2120 hours.
Alternate period : 2200 hours to 2220 hours. (In case earlier period cannot be adhered due to bad weather) In the event of cancellation on 2 December 2009, the fireworks display will be postponed to 3 December 2009. There will be no change in the display period.

Location : VivoCity Waterfront (see attached plan):

Fireworks display will take place at VivoCity waterfront area in Cruise Bay from the anchored barge. A circular safety zone of 180-metre radius centered at the barge will be enforced 30 minutes prior to and after the display. Safety boats will cordon off the safety zone. The event will conclude no later than 2140 hours or 2240 hours depending on
the display period for the scheduled day. Further general enquiries related to the display can be directed to Mr Suppiah, the display co-ordinator, at Tel: 9040 5242, email: suppiah@effectstechnologies.com.sg


Temporary Staging Ground at Sentosa
from Port Marine Notice No. 167 of 2009 dated 17 Nov 09
This is an extension of PMN No. 66 of 2009. The working period has been extended.

With effect from 12 Dec 2009 to 11 Jun 2010. 24 hours daily, including Sundays and Public Holidays. At Cruise Bay, (see attached chartlet):

Project work will entail the transportation of excavated earth by tugs and barges. A safety boat/tug boat will be deployed in the vicinity to warn other craft to keep clear of operation site and to assist the mooring and unmooring operation of barges at the temporary staging ground. Further enquiries relating to the project can be directed to Mr David Ching, the project manager at Tel: 9186 1366 (email: david.ching@kajima.com.sg).


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Powering up Pulau Ubin: what wild effects?

How will plans to bring renewable energy to Pulau Ubin affect the shores and wildlife there? For example, will cheap electricity result in disruptions such as excessive lighting? Marcus Chua's study suggests that night activities and unregulated night walks are among the threats to the Greater mousedeer, which he recently rediscovered on Ubin.
Will the alternative energies impact our shores? In particular, technologies such as algae-based biofuels and power generation from waves. Wind turbines can also affect bats, birds and other flying creatures.

Here's a summary of some published details about the project.

The project comprises five inter-connected grids serving Pulau Ubin's north, south, east, west and jetty regions. It will cover the 100 inhabitants, small businesses, restaurants and the outdoor training camp Outward Bound Singapore.

The micro-grids will rely on renewable energy such as solar, biofuel, and micro wind turbines. It will be an intelligent power grid which will get around uncertain and patchy power supply, e.g., if the wind dies down. The Ubin grid will be the first to pull and redistribute electricity for a confined area.

The project is intended to supply the Ubin community, as well as to testbed clean technology. Experts said the technology for such micro-grid projects could be exported and implemented in other parts of the region.

The Energy Market Authority (EMA) will accept "expression of interest" in this project over the next month. The first phase covering the jetty area is expected to start in 2010. Each grid is estimated to take about two years to complete.

The islanders now live 'off-grid' and rely on their own diesel power generators. Pulau Ubin does not draw electricity from the country's main power grid because it has been too expensive to lay transmission cables for the low demand there.

Mr Robert Teo of the National Parks Board which manages Ubin, said NParks would need to see a development plan to assess the impact of the grid on Ubin's plants and animals, including those on its Chek Jawa intertidal flats.

Last November, The Energy Market Authority (EMA) announced plans to embark on a project to turn Pulau Ubin into a model 'green island' powered entirely by clean and renewable energy.
At that time, a long list of potential technologies were considered, including solar, wind, marine ('waves'), biomass (such as solid waste and algae), biodiesel and bioethanol, hydrogen and fuel cells, microturbine.

There was an assurance that the technologies adopted would be those that "best integrate into the island's natural environment".

A tender for a six-month consultancy study was called, slated for completion in May 09. It was to look at how much energy is needed by residents on the 10 sq km island, and the most cost-effective combination of renewable energy technologies that can be used.

EMA sees the project to transform part of Pulau Ubin into a model 'green' island as boosting Singapore's ambition to be a global test-bedding site for new energy technologies.

Articles on the Pulau Ubin power project
Some articles on impact of green technologies on biodiversity

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5 Dec (Sat): Kusu Island Reefwalk with the Blue Water Volunteers

Our wild and wonderful coral reefs are just too exciting to be enjoyed by divers only! Non-swimmers are most welcome, as we only visit the reefs during low tide, so you only expect to get wet around your ankles at most.

Trained and enthusiastic volunteer guides will introduce you to the marine life found on Kusu Island and share reef stories.

Suitable for children.

Pre-registration is required.

Places are limited, sign up on the website http://www.bluewatervolunteers.org/events. Closing date for registration is 22 28 November 2009.

Time: 6-9pm
Venue: Marina South Pier (subject to changes)
Cost: $15/person
Website: http://www.bluewatervolunteers.org
Contact: reefwalk@bluewatervolunteers.org

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What does a baby coelacanth look like?

Once considered extinct, very little is known about this fish, which is considered a living fossil. So it was exciting when Japanese marine researchers photographed and filmed for the first time, a juvenile coelacanth
A similar-sized juvenile was once discovered in the belly of a pregnant coelacanth. It is believed that their eggs hatch inside the female and the young fish are fully formed at the time of birth.

Thanks to Dr Tan Swee Hee for the heads up on this development.

Japanese researchers film rare baby fish 'fossil'
AFP Google News 18 Nov 09;
TOKYO — Japanese marine researchers said on Tuesday they had found and successfully filmed a young coelacanth -- a rare type of fish known as "a living fossil" -- in deep water off Indonesia.

The creature was found on October 6 at a depth of 161 metres (528 feet) in Manado Bay off Sulawesi Island, where the Indonesian coelacanth was first discovered, according to the researchers.

Video footage showed the 31.5 centimetre (12.6-inch) coelacanth, coloured blue with white spots, swimming slowly among rocks on the seabed for about 20 minutes.

"As far as we know, it was the first ever video image of a living juvenile coelacanth, which is still shrouded in mystery," said Masamitsu Iwata, a researcher at Aquamarine Fukushima in Iwaki, northeast of Tokyo.

Scientists hope the discovery will shed light on the habitat and breeding habits of coelacanths.

The researchers used a remotely operated, self-propelled vehicle to film the coelacanth, which appeared to be newly born, Iwata said.

A similar-sized juvenile was once discovered in the belly of a pregnant coelacanth. It is believed that their eggs hatch inside the female and the young fish are fully formed at the time of birth.

Coelacanths are commonly regarded as having evolved little from prehistoric times and were thought to be extinct until a living specimen was discovered in 1938 off the coast of southern Africa.


Aquarium snaps world's first photos of young coelacanth
Japan Times 18 Nov 09;
IWAKI, Fukushima Pref. (Kyodo) A team from an aquarium in Iwaki, Fukushima Prefecture, has succeeded in capturing the world's first photographs of juvenile coelacanths, a fish regarded as a living fossil, off Indonesia's Sulawesi Island.

According to Aquamarine Fukushima, the fry were found Oct. 6 at a depth of 161 meters in Manado Bay off North Sulawesi Province, where the Indonesian coelacanth was first discovered more than a decade ago.

While little is known about the breeding habits of coelacanths, examination of captured specimens has shown that their eggs hatch inside the female and the young, known as pups, are born as fully formed juveniles.

The fry photographed by Aquamarine Fukushima were 31.5 cm long and appeared to be newborn.

The coelacanth has changed little since ancient times. It is believed to have originated during the Devonian period about 360 million years ago and was thought to have gone extinct some 80 million years ago.

Prior to 1938, when the first living coelacanth was discovered in the Comoros Islands area of the Western Indian Ocean, off southeastern Africa, the primitive species was known only from fossils.

In 1997, a fish identified as a coelacanth was photographed in a local fish market in Manado City, North Sulawesi, more than 10,000 km from its closest known relatives.

A live specimen was captured the following year and DNA analysis subsequently showed the Indonesian coelacanth to be a separate species.

Aquamarine Fukushima, using a remotely operated, self-propelled vehicle with a camera attached, has been undertaking field surveys in North Sulawesi since 2005.

The aquarium has been collaborating with the Research Center for Oceanography of the Indonesian Institute of Sciences, and the Faculty of Fisheries and Marine Sciences of Sam Ratulangi University.

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19 November 2009

A new sponge species - including a Singapore specimen!

A new sponge species has been described from specimens from Asia, including one "collected from intertidal reef flats of Singapore during low tides".
Suberites diversicolor spec. nov. has a diverse display of colour-morphs including olive-green, blue, purple, red-orange, or orange-yellow. It is encrusting or massive with small protrusions or larger globular branches.

Originally thought to be specific to anchialine lakes -- small bodies of seawater that are entirely surrounded by land -- the sponge was found to be more widespread in inshore systems. During the period when anchialine lake in Indonesia were being surveyed a very similar species of Suberites was observed in Singapore by Lim Swee Cheng. Subsequently, the species was encountered in coastal mangrove systems in Indonesia, similar lake systems in Vietnam and a man-made marine pool in Darwin, northern Australia.

More details in the paper L.E. Becking, S.C. Lim. A new Suberites (Demospongiae: Hadromerida: Suberitidae) from the tropical Indo-West Pacific on Zoologische Medelingen, 83 (September 2009).

Wow! There sure is a lot to learn about our shores. And our humble marine life can help with understanding more about marine life elsewhere too!

Hooray for Swee Cheng for yet another sponge discovery. Swee Cheng has written a great field guide to Singapore sponges which you can take with you on your next shore trip.

Thanks to Dr Tan Swee Hee for the heads up on this article!

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Leonids let down?

While it seems many were disappointed by the Leonids display, DK of Dee Kay Dot As Gee seemed to have found the perfect place in Singapore for great sightings!

He chose a dark seashore and shared on his blog: "At around 4 plus, there was this huge meteor that appears in the eastern sky. Looks like a fireball in the sky which lasted at least 10 to 15 seconds. It was a beautiful sight. All the waiting paid off. And at the end of the day, I lost count of the number of meteors that I saw. I think around 20 plus." He has links to other sightings in Singapore too.

And Ykchia shares more photos and sightings on the NightEvents by Video Patrol - Singapore blog.

Meanwhile, the news reports suggest most people around Asia were disappointed mainly due to cloudy weather.

Alas, I failed to stay up for the event. I was just too tired from the recent field trips.

Did you see any meteors?

Thousands gathered to witness Leonids Meteor showers
Satish Cheney, Channel NewsAsia 18 Nov 09;
SINGAPORE: Thousands of stargazers all over the world gathered on Wednesday to view what was said to be a spectacular show of celestial proportions.

The Leonid Meteor showers were expected to rival the massive display of shooting stars in 1833 when the entire sky was lit up by thousands of meteors.

In Singapore, stargazers gathered for the show in the wee hours of the morning.

Some came prepared with telescopes, while others came empty handed but armed with wishes.

"(We wish) for a better year ahead, probably good results for our O-levels and world peace," said one.

"We're 16 and we just finished our O-levels... hope to make some wishes...." said another.

This year, the cosmic spectacle can be seen from all over the planet but astronomers say Asia has the best viewing spots.

But many parts of Asia, including Singapore, experienced cloudy weather.

Hence, instead of a massive fireworks display the sky gazers were expecting, there were sparklers.

Scientists in Singapore say that about 14 shooting stars were visible from 4.30am to 5.30am. - CNA/ir


Meteor showers in Asia disappoint
Yahoo News 18 Nov 09;
NEW DELHI – Thousands of stargazers across Asia stayed awake overnight to catch a glimpse of what was advertised as an intense Leonid meteor shower, but the show fizzled rather than sizzled for many because of cloudy conditions.

One group of about 30 amateur Indian astronomers saw the meteors light up the sky at the Siriska wildlife sanctuary, about 95 miles (150 kilometers) south of New Delhi — counting 78 during a four-hour period.

"There was no moon in the sky, which is good for observation," said Yogeshwar Kanu Aggarwal, a member of the Space Science Popularization Association of Communications and Educators. "We could see flashes of light for almost 10 seconds."

Leonid meteors are bits of debris from the Comet Tempel-Tuttle and were named after the constellation Leo, from which they appear to originate. NASA scientists had projected there would be up to 300 raining down every hour, compared to a typical night when there are about eight an hour.

Night owls in Manila, however, were left staring at the lights of passing airplanes because of cloudy conditions. More than 1,000 Thais who camped out in a parking lot on the outskirts of Bangkok had better luck, spotting 52 over several hours.

"The sky was clear and there were many meteors around 4 a.m.," said Suranand Supawannakij, director of the Science Center for Education in Rangsit, about 25 miles (40 kilometers) north of Bangkok. "They came from many directions. I am always excited seeing a meteor shower."

The Leonid meteors travel at 156,000 miles (251,000 kilometers) per hour. They consist mostly of dust and ice, and evaporate long before they reach the ground, so "you can go outside and watch the Leonid meteor shower without worrying about getting whacked on the head," said scientist Bill Cooke of NASA's Meteoroid Environment Office.

When a Leonid meteor storm was first observed in 1833, Cooke said it must have seemed like something out of the apocalyptic saga "2012." More than 30,000 meteors an hour rained down on an unsuspecting public, sparking panic and fears of the end of the world, he said.

"They were seeing 10 meteors per second all over the sky," he said. "You read newspaper accounts and robbers were returning what they stole because they wanted to be right with God. People were praying in churches, in their yards."

This time around, the meteor shower was greeted with the oohs and ahhs that one hears at fireworks displays rather than screeches of fear.

"I've seen meteors before but this was different," said Akradech Lekkla, a 39-year-old taxi driver who joined several whiskey-drinking Thais in Ayutthaya, about 30 miles (50 kilometers) from Bangkok.

"It looked like it was raining meteors," he said. "They came in so quick that if you didn't pay attention you missed them."

In India, a cloudy sky disappointed thousands of stargazers in Agra, home of the Taj Mahal. Pawan Sharma, a 36-year-old photographer, could only spot meteors, one of them big enough to be seen streaking across the sky in a window between the clouds.

"It was a momentary thing. It was so disappointing," he said.

In Nepal, cloud and fog cover over much of the Himalayan nation blocked views of the meteors.

Jayanta Acharya, astronomy professor at Katmandu's Tribhuwan University, said he woke up early to view the meteor shower from the rooftop of his house.

"It was a big event for us and we are all disappointed to have missed it," Acharya said.


Meteor shower 'fails to impress'
BBC News 18 Nov 09;
Stargazers who stayed up throughout the night to witness what was expected to be an intense meteor shower were left disappointed.

The Leonid meteor shower, the best views of which were to have been from Asia, was largely obscured by cloud.

The shower was caused by tiny high-speed particles from the tail of Comet 55 P/Tempel-Tuttle, which was last in the vicinity of the Earth in 1998.

Nasa had projected there would be up to 300 meteors raining down every hour.

On a typical night there are about eight per hour. In many of the viewing hotspots, however, hopeful visitors were let down by the weather.

Reports from the Philippines, Nepal and India were of cloudy conditions blocking a view of the night sky.

But there were a few stories of stargazing success.

Up to 1,000 people who camped out in a car park on the outskirts of Bangkok in Thailand spotted 52 meteors over several hours.

One group of amateur astronomers in India at the Siriska wildlife sanctuary, south of New Delhi reported counting 78 during a four-hour period.

"There was no moon in the sky, which is good for observation," Yogeshwar Kanu Aggarwal, a member of the Space Science Popularization Association of Communications and Educators, told the Associated Press news agency.

"We could see flashes of light for almost 10 seconds as bright as star Sirius."

North American observers stayed up from the early hours of the morning until dawn on Tuesday 17 November to view the shower's peak.


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Soggy seagrass fun at Cyrene

The weather was miserable as we headed out for our favourite submerged reef. Sheets of rain wiped out the city skyline behind us, lightning and thunder crashed in time with the waves.
We had to wear raingear even in the boat! This did not bode well for the trip.

But as we approached Pulau Bukom, the deluge let up and dark skies lightened. Although the petrochemical plants never stop churning.
There was a sliver of clear skies ahead, over the emerging submerged Cyrene Reef.
Behind us, the rain had let up. And here's the much loved dinghy that we need for a safe landing.
Without any hesitation, the intrepid team head out for the Reef, in the good hands of Jumari who once again skillfully gets the land lubbers out without mishap.
The tide is still a little higher than it ought to be. Hmm, I should really start taking notes about rain/barometric pressure/tidal prediction variations.
The whole point of coming here of course is to show Cyrene to Prof Paul.
He's such a joy to have along for our field trips as he is not only knowledgeable about all kinds of shore stuff, but also very experienced in field trips. He shared about how he spent months in Irian Jaya having to sleep in a canoe and eat blubbery sago. So I guess our trips are a breeze in comparison.

Prof Paul is really into seagrasses! So I'm very glad to be able to share Cyrene's wonderful assortment of very healthy seagrasses. Including one of my favouries, the Noodle seagrass (Syringodium isoetifolium) which has cylindrical leaves!
Prof Paul takes a closer look at all our seagrasses there. I think it's fantastic that we have so many different species on a reef that lies just off Pulau Bukom, and next to major shipping lanes. That's a huge cruise ship in the background.
The seagrasses here are full of life! Prof Paul spots the Snaky sea anemone (Macrodactyla doreensis). We came across two of them today! I find that these anemones are not very common on our Southern shores.
The Cyrene Reef meadows reminds me of Chek Jawa, with animals such as peacock anemones (Order Ceriantharia).
Prof Paul spots this well camouflaged Penaeid prawn (Family Penaeidae).
And he spots this Discodoris boholiensis nudibranch! Wow, he sure has good eyes.
There were also a lot of large Ornate leaf slugs (Elysia ornata) everywhere. Possibly because of the large bloom of Hairy green seaweed (Bryopsis sp.)?
Very common on this shore are large razor sharp Fan shell clams (Family Pinnidae). Prof Paul said he used to cut himself a lot on these shells when he was doing his PhD in Indonesia.
Another Cyrene special are these T-shaped Hammer oysters (Malleus sp.) which lie freely on the ground. They are often covered with pink encrusting algae and other colourful creatures like these green gum drop-like ascidians.
At first I thought it was some new kind of sea urchin that I haven't seen before. But looking more closely, I think it is a White sea urchin (Salmacis sp.) that's darker in colour than usual. There were many of these sea urchins about, though most were well hidden under debris that they carry over themselves.
Cyrene Reef is a great place for echinoderms. Especially the Knobbly sea stars (Protoreaster nodosus) which occur in great abundance. The constant mizzel (miserable drizzle) and wind makes it hard to shoot submerged animals. The others also saw the Pentaceraster sea star (Pentaceraster mammilatus) and some odd in between stars.
Here's a special Knobbly which might be Nudistarre, the knobbly adopted and named by the Naked Hermit Crabs!
We saw a Knobbly that looked very similar last November on Cyrene (see photo below). The Star Trackers will know as they have figured out a way to identify and keep track of individual Knobblies by the arrangement of the knobs and bumps on the arms. Or in this case, the lack thereof? Here's what Nudistarre looks like on the Star Trackers' records.
On the sand bars, there are also lots and lots of Common sea stars (Archaster typicus). Many were in pairs, arms locked in pseudo-mating position. A position in which three is somewhat of a crowd.
While Prof Paul noticed this Common sea star that is getting it REALLY wrong.
On the sand bar, I also found this enormous Olive snail (Family Olividae). It's very handsome with a glossy shell and spotted body. I have a suspicion that the olive snails found on Cyrene Reef are different from those we commonly see elsewhere.
The tide is rather short and soon it was approaching sunset. After a quick last look, we head back for the big boat.
Once safely back, all thanks to Jumari, I found out that the rest had found interesting Giant clams! James found a shell of what might be a thought-to-be-extinct-in-Singapore Giant clam Hipppopus hippopus! While Kok Sheng found the shell of a Fluted giant clam (Tridacna squamosa) and just before they left, Mei Lin found the shell of a Burrowing giant clam (Tridacna crocea). Kok Sheng has a great photo of the shells on his blog. Alas, they didn't find any live ones, not even the one I saw previously in October last year. Well, hopefully we can find some on future trips!

Of course, they also saw lots of other interesting things. Can't wait to read about it on their blogs.

Prof Paul declared the Reef to be quite rich. Which means a lot to me as he has seen many many different shores all over the world! Yay!

Hopefully, Cyrene Reef will not be too badly affected by the major reclamation works at Pasir Panjang. Here's a photo of the works there that I took on the way to Semakau the day before when we had much better weather.
And here's a map of the reclamation site (in green) in relation to Cyrene Reefs (in yellow).
Other developments nearby include: the major petrochemical complex expansion on Pulau Bukom which is expected to come online early next year. I didn't see any signs of the soil sampling that is supposed to be taking place near Cyrene Reefs during this period.

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17 November 2009

Sunny Seagrasses of Semakau

It was a HOT sunny blue-sky day as we head out for Semakau! Amazing! Despite the wet weather warning and gloomy wet days we recently experienced.
We're here to introduce Prof Paul from the Singapore-Delft Alliance, and Siti's supervisor, to the marvellous seagrasses of Semakau.

Also with us today is Dr Benito Tan to check out the island for the first time!
James, Geraldine and Andy show him around on the high shore, as Siti and I head out with Prof Paul.
The vast seagrass meadows of Semakau put up a good show today. And we quickly saw all the species found here. Prof Paul is excited to see some bracts of the male flowers of the Tape seagrass (Enhalus acoroides). These emerge from the base of the plant.
And we see a female flower too. This grows on a long stalk which eventually develops curls. But these have finished blooming and the white petals have fallen off.
We try to find a fruit, but alas, we had no luck. We are also looking for baby Tape seagrasses, which have just settled down. It's a lot harder than it seems to find one. All the little ones I investigated turned out to be shoots of larger, established Tape seagrass clumps.

But the seagrasses are full of life. Though most of the mobile seagrass dwellers tend to be in hiding during daylight, there are lots of those that can't run away. Like this big orange sponge that Siti found. Could it be a Mycale sp.?
Another sponge I enjoy seeing is this one that is named after Singapore. I call it the Daisy sponge but the scientific name is Coelocarteria singaporensis
There are also some hard corals commonly seen growing among the seagrasses. This one is particularly pretty. Possibly some sort of Montipora sp.
Prof Paul also spots a bunch of Blue corals (Heliopora coerulea) which ironically is neither blue nor a hard coral. More about them here.
These Sunflower mushroom corals (Heliofungia actiniformis) are only commonly seen near seagrasses at Pulau Semakau and Pulau Hantu which lies nearby. I also used to see them at Beting Bronok, but no longer. These are sometimes mistaken for sea anemones.
There are many large Giant carpet anemones (Stichodactyla gigantea) among the seagrasses. Alas, I couldn't find any anemonefishes among them. Perhaps the fishes are well hidden under the sea anemone.
Another interesting creature commonly seen is the Fan shell clam (Family Pinnidae). Here's one that is slightly open. I thought of Mei Lin aka Giant Clam Girl and hoped she was successful in her Giant Clam hunt elsewhere on the shore.
And how delightful! Prof Paul finds an Alligator pipefish (Syngnathoides biaculeatus). It is also sometimes called the Double-ended pipefish because both ends look alike. It has a prehensile tail which it uses here to cling onto seagrasses. How adorable!
But Prof Paul REALLY wants to see a Knobbly sea star. After wandering for a while, Siti finally finds one!
And soon, we realise we are surrounded by lots of Knobbly sea stars (Protoreaster nodosus)! There's one or two spots on the vast Semakau shores where these stars seem to like to hang out.

Here's just a few of the ones I saw. I shoot them where they are. We should not move, handle, carry around or otherwise molest these stars. Here's more about why it may hurt the sea stars if we pick them up.
As we head back home, James spots what looks like a large Long black sea cucumber (Holothuria leucospilota). Unusually, it was near the high shore edge of the seagrass. These sea cucumbers are usually found near coral rubble. And it's the first time I've seen one of these at Semakau.
Prof Paul also works with mangroves and we had fun looking at some of the trees on the shore.
It was a golden sunset with a blue sky. But black clouds were building up over the mainland side.
In the forest, I saw this seedpod with pretty fluffy seeds.
Just as we got into the van that Mr Yew of NEA kindly stayed back to drive, the weather really started to turn. By the time we got into the main NEA building, it was pouring and the wind was howling! Lighting and thunder were going off like cannons! Wow, we really got back in time. All thanks to the kindly NEA staff who provided transport even though they were very short handed today.

While waiting for the boat, we had a chance to catch up with what everyone saw. James had found a large Hollow-cheeked stonefish (Synanceia horrida)! As well as the Pizza anemone (Cryptodendrum adhaesivum). While Mei Lin found yet another Burrowing giant clam (Tridacna crocea). Marcus might have seen just hatched baby anemonefishes near the Magnificent anemones (Heteractis magnifica). And Andy saw tracks of what might be the Smooth otter (Lutrogale perspicillata). Wow, I can't wait to see their photos.

We had a near miss lightning strike on the sea as the boat slowly headed home in the driving rain. Lightning is truly the scariest thing on the shores. Thankfully we all made it back alive for a great dinner at the usual prata place.

Looking forward to our trip tomorrow, and hopefully we can enjoy good weather again.

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