I'm on a mission at Pasir Ris to take a closer look at some curious anemones, but also had a chance to have a quick look at the shore here.
Sea lettuce seaweed (Ulva sp.), normal for this time of the year. Large areas are covered in mats of Nest mussels (Musculista senhousia).
Here a closer look at the tiny mussels. These tiny mussels build communal 'nests' with their byssus threads incorporating sediments, bits of broken shells and other debris. Large areas can be covered in such 'nests', pockmarked with little slits, each housing one mussel. After the massive flooding at
Chek Jawa in 2007 that led to mass deaths there, mats of these mussels
were also seen at Chek Jawa. Fortunately, yesterday I didn't see signs
of mass deaths at Pasir Ris, although it has been a very wet monsoon
Sand stars (Astropecten sp.)! There were lots of them.
Ribbon worms (Phylum Nemertea) on the sand. Some were very
long, but others like this one with a black head were shorter. It took
me a while before I realised I was shooting its butt instead of its
Razor clam (Family Solenidae) that was moving about on the surface
with its large muscular foot. Wow, see how the base of the foot forms a
kind of triangular wedge. This is probably how the clam manages to dig
rapidly into the sand. Using the wedge to get a grip, then contracting
to pull the smooth shell into the sand. The tube at the other end of the
shell is its siphon.
Tiger moon snails (Natica tigrina). I saw about twenty of them! I've never seen so many before on one trip.
similar anemone here. But are they all the same? Dr Daphne Fautin, world authority in sea anemones, is kindly looking into these beasts and would like to know what they look like when alive. In particular their oral disk and body column.
(Family Nassaridae) with at least seven little anemones on its shell!
Despite its burden, the snail was moving rapidly!
Mangrove anemone with petals around its mouth.