A rather large snail, about 8cm long! It's a conch snail as it has a 'knife' at the tip of the muscular foot, and big eyes on long eye stalks. Possibly a young Spider conch (Lambis lambis) that has yet to grow its spines?
trip in Dec 2011?
Indeed, I saw many different kinds of snails on this shore. There were quite a lot of Gong-gong snails (Strombus turturella) on the shore, and many Black lipped conch (Strombus urceus). There were some small Firebrand murex (Chicoreus torrefactus), and lots of Oval moon snails (Polinices mammila) burrowing in the sand. The Bazillion snails (Batillaria zonalis) are not so numerous on this stretch of Tanah Merah.
Fan clams (Family Pinnidae) and one living Large cockle (Family Cardiidae).
oysters (Family Ostreidae) on the seawall that were dead.
Hollow-cheeked stonefish (Synanceia horrida) is quite common on Tanah Merah. Fortunately, I could show the ladies what he looks like. They said they might have seen another one later on. But I didn't see many other kinds of fishes, aside from plenty of gobies.
Bracket mushroom coral with fan worm is still there and seems fine. The water was rather murky so I couldn't get a good photo of it. But it looks much the same as before.
Flowery disk coral (Turbinaria sp.) colonies, all of them seemed fine.
Pore corals (Porites sp.) remain quite common, including a few large colonies.
Favid corals (Family Faviidae) remain the most common hard coral that I saw today. There were many patches of Zebra coral (Oulastrea crispata), and many small to large colonies of other Favid corals in various colours and patterns.
Brain coral (Family Mussidae), tiny Carnation coral (Pectinia sp.) and some Anemone corals (Goniopora sp.). But I couldn't find the Acropora coral (Acropora sp.) colony. Oh dear.
leathery soft coral (Family Alcyoniidae) seems to be getting bigger!
Sand bubbler crabs (Scopimera sp.), as well as the rosette caps that Solider crabs (Dotilla sp.) often create over their burrows. I saw one moult of a Swimming crabs (Family Portunidae), but didn't clearly see any crabs. These are usually not so active during the day.
fanworms (Family Sabellidae) today.
Frilly sea anemones (Phymanthus sp.) and one small cluster of Button zoanthids or colonial anemones (Zoanthus sp.).
Haddon's carpet anemones (Stichodactyla haddoni), all under 10cm in diameter, some only about 3cm. I didn't see any anemone shrimps in them.
Thumbs up sea squirts (Polycarpa sp.), and a tiny patch of Orange lobed ascidians. I didn't come across any sponges today.
Spoon seagrass (Halophila ovalis), with tiny leaf blades. And one small patch of Tape seagrass (Enhalus acoroides) in deeper water that is badly covered in epiphytes.
Mermaid's fan (Padina sp.). I saw a few clumps of Sargassum seaweed (Sargassum sp.) and some tiny patches of other kinds of seaweeds.
Common sea stars (Archaster typicus). Large parts of the shore today was covered in a thin layer of scum with lots of air bubbles.
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