Send As SMS

Sunday, December 24, 2006

Lazarus: hoping for a resurrection

Wildfilms and a motley bunch of beachfleas had a quick look at Lazarus Island yesterday. This is our first visit for a long while.



The rocky shore facing St. John's is strewn with an assortment of colourful, wave-worn pebbles and stones. The sea relentlessly carved the cliffs into wondrous shapes, showing off the layers of colourful sediments. Coastal plants cloak the hillside. A natural and priceless work of art, eons in the making.

Joseph Lai made a preliminary survey of the coastal vegetation and has made some exciting discoveries.

Among them, probably the last Changi Tree in the Southern Islands. And what a majestic Sindora wallichii it is. It has a wide crown, is about 18m tall with an estimated girth of 270 to 300cm! Two other rare plants he saw include a rare ephiphytic shrub and a mistletoe.

See Joe's Flora of Lazarus on his www.eart-h.com website for a full list of plants with photos, and also photos of the beautiful rock formations on the island.


Seagrasses being recently very much in our minds, we were delighted to find patches fresh green Spoon seagrasses (Halophila ovalis). There were also Sickle seagrass (Thalassia hemprichii) and Needle seagrass (Halodule sp.). But large chunks of seagrasses had their underground stems and roots exposed, suggesting something is dislodging them.


Wildfilms focused on the rocky shore and rubble area to try to document the shore life there. Some of the usual shore animals, such as this beautiful Branched tentacle sea anemone (Phymanthus sp.), were common there.


I disturbed a busy little Marine spider (Desis sp.) who skittered over water, scrambled over rubble and rustled through seaweeds in its hunt for dinner.


The special find for the day was this nearly transparent flatworm that slithered rapidly over the sand. There's a teeny tiny little goby infront of it as well (lower right corner) which I totally didn't see until I processed the photo (as usual). We thought we should name this flatworm the Ahchoo flatworm. As in "Aaah Chooo!! Oh dear, did I make that? Or is that a transparent flatworm?".

There was also an encounter with an octopus, which apparently stressed both the observers and the observed.


There were a few living hard corals. But we did not see any of the huge soft corals that used to plaster the shore like big fried omelettes. Some photos of the Lazarus shore taken in 2002 are on beachfleas and Dr Chua Ee Kiam's simply green site

In fact, the shore seemed very quiet. Perhaps it was the recent deluge (most marine creatures don't agree with freshwater)? Or perhaps something more? There is a huge floating structure opposite the rocky shore that was not there in the past. It looks like part of some sort of fishery enterprise. The currents rushing under the bridge between St John's Island and Lazarus Island is also something different.

It is rather sad to know we traded gorgeous living reefs and shores that any Singaporean could visit, for a $60m reclamation project on Seringat-Lazarus-Kias, ostensibly to create something that millionaires might want.

This effort included the production of a 'natural beach' which involved the import of 1,000 coconut trees, dumping enough soil to fill 5,000 lorries and measuring two storeys high when piled up, and 36 cubic metres of water every day to keep the plants growing. The Lazarus 'natural shore' project won the landscape company a gold award from the Landscape Industry Association.

Ironically, this project buried the living reefs at Seringat and Kias and probably affected the shores on Lazarus. Priceless habitats that nature took millenia to build. That were ours without cost.

But nature is resilient and the Lazarus shores may yet recover. If it is left alone and given time to recuperate. We can only hope for a resurrection.

Monday, December 04, 2006

Melibe! Melibe! Melibe!

"Hey Ron, there's a nudibranch here!"

One of the visitors shouted to me, and I walked towards him.

"Eh... this is actually a flatworm," I said.

I was guiding a group of 11 people at Semakau. Despite the wrong identification by the visitor, it's still a good start. We had not even gone into the seagrass lagoon, and we already found a flatworm! And it's not the usual brown one with white spots, but one with stripes.

And half way across the seagrass lagoon, I saw something long and big creeping among the seagrass...

It's a huge synaptid sea cucumber! Probably between 1 - 2 metres long, and I actually had a problem trying to find its front and end.

Call me sua ku. I've seen synaptid sea cucmber before, and do know that they can get really long, but have never seen one so big myself before.

Now, today certainly looked like a day of surprises!

We get the usual jorunna, discodoris, chromodoris, the spotted brown flatworm, noble volutes, sandfish etc etc... but no knobbly seastar (apparently some of the other guides found two on the left side of the coral reef, and we managed to see them in the end.)

My eyes were tuned to looking for knobbly seastars when..

"Ron, can you come over to see what's this?"

I walked towards the visitor. There was some translucent reddish brown thing trapped in a pool of water hardly bigger than itself, just beside a rock.

Using my chopsticks, I picked it up and put it into my container. It's about 10cm long, I think.

As I pour some water into the container, 2 lumps detached from the "thing" and floated in the water...



"This is definitely a sea slug, the 2 lumps that it has shed are called cerata..."

"And hey, you can see it has a hood in front..."

(I could hardly contain my excitement at this moment as I explained to the visitors...)

"... like a melibe! This is not something I've seen before. Let me check with another guide."

"Chay Hoon, I found something. Need you to identify for me!"

I rushed towards Chay Hoon, who was like at least 50 metres away when I yelled at her. Probably Chay Hoon could sense from my voice that it must be something special, and also rushed towards me.

Looking into my container...

"Ron!" She exclaimed. "You have found a melibe!"



This was certainly a moment that simply couldn't be described in words...

YES!!! After all these years (ok, kind of exaggerated, it more like the past 2-3 years?), WE HAVE FOUND A MELIBE!!!!!!!!!!

Ok, it's found by my visitor, not a wildfilm crew, but hey! Whatever it is, finally, we have found a melibe!!!

Ever since I joined Wildfilms, we have been talking about finding the melibe. Ria was always teasing us that we'll probably find a tiny slug on the melibe, but miss the melibe all together!

The previous record of a melibe was found at Changi, and I had assumed that eventually we will probably find it there or some where in the northern islands.

But ironically, just sometime back, I remember telling someone that we have been finding all kinds of new things in Semakau, and since we also have lots of seagrass and seaweeds in Semakau, perhaps for all you know we can find a melibe here as well. And how true this turned out!

The melibes I've seen in photos are usually greenish in colour, while this one is kind of reddish brown.

Unfortunately, it shed its cerata when I picked it up. Did some research on the web, and it says that some melibes shed their cerata when they are disturbed, some what like the polybranchia. Just to satisfy myself, I've cheated here and done some photoshop work and "attached" the cerata back. Probably this could be how it looked like before I disturbed it :P



Will be going to Semakau again on Tuesday and Wednesday. Hopefully this time round, I can find another melibe - a more complete one this time round with all its cerata in place :)