Pink warty sea cucumber (Cercodemas anceps) and the Thorny sea cucumber (Colochirus quadrangularis), BOTH with their feeding tentacles extended. A nice photo to show the differences between these similar looking creatures. Today we also came across lots of Seagrass anemones and some strange snails we've never seen before.
Another colourful creature that recently became common on Changi is the painfully pink Pink sand dollar (Peronella lesueuri). Often buried just beneath the sand, I saw more of these today than the usually more abundant purply Cake sand dollars (Arachnoides placenta).
Noble volute (Cymbiola nobilis), hunting for buried prey with their swiveling siphon. These beautiful animals look so handsome alive and I'm glad they were not taken away by the small group of other people who were also on the shore. On my last trip here in May, I saw a clam make an amazing escape from a hunting Noble volute.
Painted sand stars (Astropecten sp.) and one small Biscuit sea star (Goniodiscaster scaber). But Marcus saw a Common sea star (Archaster typicus).
Remarkable sea cucumbers (Holothuria notabilis) and several orange sea cucumbers. There were lots and lots of buried Ball sea cucumbers (Phyllophorus sp.) and Smooth sea cucumbers.
Beige sea cucumber with its feeding tentacles extended. The other lump is an encrusted shell occupied by a hermit crab.
Window pane clams (Placuna sp.) many of them very large, and Fan clams (Family Pinnidae), several Hammer oysters (Malleus sp.), many Ball moon snails. There were also lots of White sea urchins (Salmacis sp.), with much fewer Black sea urchins (Temnopleurus sp.). Also patches with many sea pencils, while Ball sea cucumbers (Phyllophorus sp.) seemed everywhere. I only saw a few flowery sea pens (Family Veretillidae) and some cerianthids (Order Ceriantharia). Here's a slideshow of the transects for today's survey.
The special finds today include the Motherlode of Seagrass anemones! I've been finding these tiny anemones in ones or twos on various shores by painfully looking at seagrasses closely. But this morning, Marcus found a small patch teeming with them!
Swimming anemones (Boloceroides mcmurrichi), the Seagrass anemone has a rather longer body column with lots of bumps. Its tentacles are also more spotted while the Swimming anemones tend to have more banded tentacles. To add to the confusion, the Seagrass anemone also 'swims' by undulating its tentacles, but not as vigorously and only for a very short while. I observed one Seagrass anemone moving to a new position by reaching out with its tentacles, then unclamping its foot and pulling itself to its new spot with its tentacles to re-attach its foot to its new location.
Peachia anemone (Peachia sp.). The anemone produces quite a lot of slime when it's disturbed.
Carpet anemones (Stichodactyla haddoni) as they have short stumpy tentacles on a broad oral disk and very short body column.
huge sea anemones found on hermit crabs.
awesome Bivalve Workshop, must make an effort to find out what it is. Of course, it's still alive so we can't mess around with its insides, but from the beautifully sculpted shell, it seems be Placamen calophylla a kind of Venus clam (Family Veneridae).
The rest of the team also had marvellous sightings which I'm sure they will share soon.
Today, the Malaysian press reported that the car ferry system that leaves from the nearby Changi Ferry Terminal will resume by the end of next year. Let's hope the increased traffic doesn't affect this lovely shore.
Posts by others on this trip
- Mei Lin shares about her two trips here as well as her busy week at a conference of taxonomists