My first survey of the northern shore of Chek Jawa in three years. Wow, there has been a lot of changes.
My last trip here was with TeamSeagrass in Jan 2013. I was surprised to see broad seagrass meadows on the northern edge of the sand bar facing Johor! The sand bar appears to have moved southwards. Here's a video of the view.
Sand bubbler crabs, Soldier crabs, Acorn worms, Straw tubeworms. And many prints of shore birds. Hermit crabs of all kinds were also common. Although we failed to find any living Button snails here.
Plain sand star with broken arms, but plenty of Cake sand dollars. Kok Sheng found two and Chay Hoon saw one Common sand star which are no longer common on Chek Jawa since the mass deaths of 2007. The team also saw some Biscuit sea stars and a Painted sand star.
Gong gong snail, Ball moon snail, Weasel olive snail. There were also many Noble volutes, some laying eggs, and a Tiger moon snail. A special mollusc found by Kok Sheng is the Watering pot shell. Also an uprooted Spiky sea fan. And Jonathan and Sankar found a bunch of cephalopod eggs! These are black when the eggs are still developing and turn transparent just before the babies hatch. Kok Sheng saw a Pygmy squid. There were many moults of small Flower crabs. The team also saw Stone crabs and snapping shrimps.
mass deaths of Haddon's carpet anemones and other animals at Chek Jawa. This is believed to be due to heavy rainfall as marine life can't cope well with too much freshwater. There are now plenty of Haddon's carpet anemones of all colours and sizes on the seagrass meadows. None of them were bleaching although some were pale. These animals eat all kinds of other animals. I saw one with a crab in its mouth, and another with several sand dollar skeletons nearby. There were also many Common cerianthids.
Garlic bread sea cucumbers, some of them nestled under the carpet anemones. Other animals found near the anemones include Ball sea cucumbers and Solitary tubeworms. The other anemone commonly seen were Big hermit-hitching anemones.
Warty pink sea cucumbers, and some small Thorny sea cucumbers. Also one Beige sea cucumber. Sankar saw an Orange sea cucumber.
Slender sea moth, Kite butterflyfish and Shadow goby. They also saw a Mangrove horseshoe crab.
The seagrasses are growing lush at the northern edge as well as in the middle of the Chek Jawa lagoon. Spoon seagrass covered large areas, as well as Needle seagrass. I also saw some Fern seagrass. The sand bar near the pontoon has moved westward towards the boardwalk and is surrounded by lush seagrass meadows including lots of Smooth ribbon seagrasses. But I couldn't find any Beccari's seagrass in the north or in the middle near the boardwalk pontoon.
Mentigi (Pemphis acidula).
Jan 2011. It was a much bigger bush and might be a different one from this.
Delek air (Memecylon edule) is fruiting.
Security Barrier aka fence around the northern shore of Pulau Ubin starts.
Photos by others on this survey