mass deaths in 2007 which wiped out the sponges and many other animals here.
I surveyed mainly the low water area outside the coral rubble area at Chek Jawa today. The abundance of Spiky flowery soft corals reminds me of Tuas Merawang beacon many years ago.
Little red-nose shrimps, Tiny colourful brittle stars. We could not find any Ovulid snails that usually feed on these soft corals. I didn't see any Ball flowery soft corals today.
Posy anemones. There were also a few clumps of Button zoanthids. There were a lot of Haddon's carpet anemones, especially in the seagrass meadows, but also on the coral rubble area. I didn't see any that were bleaching. I only saw one Common cerianthid. There were a few small Flowery sea pens. And some clusters of Stinging hydroids.
Pore corals, all those I saw were a healthy dark brown (not bleaching). This one seems to form a basket of sponges and other marine life.
Flowery disk corals. There were also many small patches of Zebra coral, some Neat hexa coral and small patches of Cave corals.
boulder Sandpaper coral.
Estuarine moray eel. It wasn't really distressed and eventually wriggled to a bigger pool nearby and disappeared into a hole there.
Blue-spotted fantail ray. The rest of the team saw other interesting fishes. Kok Sheng saw a seahorse. The first time we have seen one in the North for a long time.
Knobbly sea star (the rest of the team saw more). Also one Plain sand star, one Spiny sea star and several Cake sea stars. The most abundant sea star were Biscuit sea stars from small to large ones.
Thorny sea cucumber and Pink warty sea cucumber. I did see many Orange sea cucumbers, two Long black sea cucumbers (which are common in the Southern reefs). I also saw some Smooth sea cucumbers, Ball sea cucumbers, Garlic bread sea cucumbers. I only saw one White sea urchin.
Candelabra sea fans and Gnarled sea fans. Most looked alright. None had Ovulid snails in them. But I did see one with Tiny colourful brittle stars and another with Sea fan Winged oysters.
Jun 2014 which was already worse than what we saw in Aug 2013. The most common sponge was Melted chocolate sponge, the dark rose pink sponge that I have yet to figure out, and Yellow bumpy sponges. I did see the Thorny stem sponge, and there were two clusters of Yellow horn sponge. I saw several clumps of Purple branching sponge, some Golf ball sponges and Spiky ball sponges in various colours. Also clumps of black sponges.
Sponge synaptid sea cucumbers.
Doriprismatica atromarginata nudibranchs that we commonly see on our southern reefs.
Blue dragon nudibranch. It has purple rings on its tentacles near the mouth, and feathery rhinophores. The tubular things on its body (called cerata) are arranged like fingers on a hand. Chay Hoon says the scientific name of this nudibranch is being revised.
Needle seagrass (skinny leaf blades), Fern seagrass, Spoon seagrass (big and small leaf blades). In the coral rubble area, I saw five clumps of Tape seagrass with cropped leaf blades, although the blades are quite long (about 20-30cm long).
Delek air trees, Critically Endangered trees found along the coastal cliff. Many of the leaves are curled up. And the flower bunches look odd. I'm not sure if the trees are ok.
Apr 2015 and with the team in Jun 2014.
Thanks to NParks for permission and support to do these predawn low spring tide surveys of Chek Jawa. Thanks also to Chay Hoon for making all the transport arrangements. And the team for helping to cover as much ground as we can during the narrow low tide window. Thank you!
Chek Jawa and Pulau Sekudu may be affected by the 2030 landuse plan by the Ministry of National Development. The plan includes plans for a road link (black line) from the mainland jumping off at Punggol, crossing to Pulau Ubin through Chek Jawa to jump off to Pulau Tekong before circling back to the mainland on Changi East. Proposed reclamation (in yellow) will bury Pasir Ris shores, Pulau Sekudu and Chek Jawa as well as a large amount of shore at Changi Beach.
|Click on images for larger view.|
Tomorrow, we will be surveying Pulau Sekudu.
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