Barnacles may seem harmless, but there are some that are insidious parasites of crabs! These gruesome parasites creep into the crab, living on it and hijacking the crab into producing their eggs!
Because of the parasite egg sacs emerging from the crab. The parasitic barnacle (Thompsonia sp.) grows through the body of the host crab like a root system. The parasite affects the crab's reproductive system such that the crab becomes infertile. The parasitic barnacle eventually produces tiny egg sacs that emerge through the crab's joints. Exhausted by the barnacle, parasitised crabs usually come to an unhappy end. Thank goodness these barnacles don't infest humans!
Thorny sea cucumber (Colochirus quadrangularis), and many small carpet anemones some of which might be Tiny carpet anemones (Stichodactyla tapetum) while others might be Haddon's carpet anemones (Stichodactyla haddoni).
Gong-gong snails (Strombus turturella), Window pane clams (Placuna sp.) of all sizes, and small to medium sized Fan clams (Family Pinnidae).
Swimming anemones (Boloceroides mcmurrichi), which do kind of look like seaweeds and can be overlooked. Buried in the sand were a few Peachia anemone (Peachia sp.), all with white body columns. I didn't see any other kinds of sea anemones today. I saw some sea pencils and a few cerianthids (Order Ceriantharia).
hammer clams (Malleus sp.) here. These animals are bivalves, the hinge is on the T-shaped part. This one had a chiton on it!
chiton is also a mollusc! This is more obvious when we look at the underside. Like many snails, it has a broad foot.
Watering pot shell (Verpa penis) which was originally thought to be extinct in Singapore. Marcus later found another empty shell. Looks like they are still very much alive on Changi!
Cake sand dollars (Arachnoides placenta), I didn't come across any Pink sand dollar (Peronella lesueuri) today, except one dead one. I thought I saw some White sea urchin (Salmacis sp.) in deeper water, but I didn't see any on the higher shore. Strangely, neither Marcus or I saw any sea stars. We also did see any seahorses.
earlier this month.
Needle seagrass (Halodule sp.), almost as much as the Spoon seagrasses (Halophila ovalis). The Fern seagrasses (Halophila spinulosa) was sparse today.
our previous trip here. I hope the shore keeps well until we get a chance to visit it again.