There's a lovely stretch of seagrass meadows and sandy shores on Changi that is similar to Chek Jawa. But it's only seen at very low spring tides.
an awesome clam escape from a voracious predator!
I enjoyed a lovely sunrise, but the tide is still going out! Yes, the low tide happens about one hour later every day so there's still lots of work to do today! I haven't been here since August 2011, and I'm eager to know how this shore is doing.
at Changi usually in deeper water.
Plain sand stars (Astropecten sp.), and lots of Biscuit sea stars (Goniodiscaster scaber) big and small.
Pink sand dollar (Peronella lesueuri), and saw the dead skeleton of a Laganum sand dollar (Laganum depressum) but I didn't see a live one. There were lots of Cake sand dollars (Arachnoides placenta), though I didn't find any of their spectacular snail predators.
White sea urchin (Salmacis sp.) out and about. These sea urchins 'carry' all kinds of things ostensibly for camouflage but also as a kind of umbrella to keep off harmful UV rays. I was greatly amused by the different things these sea urchins carried. Enormous empty shells, live sea cucumbers, and skeletons of other animals.
Black sea urchins (Temnopleurus sp.), which also carry stuff. And one Thorny sea urchins (Prionocidaris sp.).
Box crab (Calappa philgarius) actually waddled up to me. So far, I've only seen this crab on this shore.
Haddon's carpet anemones (Stichodactyla haddoni), as well as some smaller ones which might be Tiny carpet anemones (Stichodactyla tapetum). There were also many Swimming anemones (Boloceroides mcmurrichi) large and small. On the high shore, there were lots of Peachia anemones (Peachia sp.).
Sea pencils on the shore today. This was just at sunrise. Later in the day, when the sun was high, they were nowhere to be seen! These burrowing creatures can retract into the sand.
flowery sea pens (Family Veretillidae) and some cerianthids (Order Ceriantharia). I didn't see many of them again after the sun came up.
Needle seagrass (Halodule sp.) both on the high shore and low shore. As usual, the dominant species were the Spoon seagrasses (Halophila ovalis). The Fern seagrasses (Halophila spinulosa) seemed to be doing well. There were many of these small slender pipefishes among the seagrasses, but they are very well camouflaged and often overlooked. Sadly, I didn't manage to spot any seahorses today. We used to see them regularly here.
Hammer clams (Malleus sp.). Today, I realise these clams actually bury themselves with the T-shaped portion beneath, sticking out the wavy tongue-like portion out of the sand. Those I see lying on the surface must have gotten uprooted?
Fan clams (Family Pinnidae) of all sizes. There's not a lot of hard surfaces on this shore, so the shell of the clam provides a home for a vast variety of creatures! Including colourful sea cucumbers,: today there seemed to be a lot more Pink warty sea cucumbers (Cercodemas anceps) than usual. Of course, the Thorny sea cucumber (Colochirus quadrangularis) were still abundant. Sea anemones also settled on the clams. Snails seemed to be laying eggs on the inside of dead clams. Dead clam shells which are still half buried provide a safe home for small crabs too.
Window pane clams (Placuna sp.) of all sizes, with many very large ones. These too provide a nice hard surface. I even saw Zebra corals (Oulastrea crispata) growing on them, and many had a small living scallop (Family Pectinidae) on them.
Ball sea cucumbers (Phyllophorus sp.) and Smooth sea cucumbers. I also saw some Olive snails (Family Olividae). James also found lots of other interesting marine life on the shore.
July 2011, when we also saw a dugong feeding trail on this shore. I didn't see any feeding trails today.
new records can be found. Let's hope it will remain rich and lush! I wish I could visit this shore more often, but there are not enough low tides to do all our shores!
My most astonishing encounter was with a clam that escaped a voracious predator. Here's more about it.
James has also blogged about the nudi and other special animals he saw.