A Knobbly sea star is 'standing' on tip toes!
A little further, I saw another Knobbly sea star in this position. Knobbly sea stars (Protoreaster nodosus) are quite abundant on Cyrene Reef, where we also often see many juvenile Knobblies. Indeed, according to the Star Trackers, "the presence of juveniles, subadults and adults indicated that there is
a healthy level of recruitment at Cyrene Reef. This habitat may be the only sustainable population of knobbly seastars left in Singapore today".
Chris Mah shared more about this behaviour on his awesome Echinoblog post Starfish Standing on their Tippy Toes: The Strangeness of Spawning! From his Echinoblog, I learnt that this posture is believed to be a part of the sea star spawning, BUT we don't really know much about this behaviour! I also learnt that some sea stars spawn 'flat', without standing on their toes. And in some species, different individuals take on different spawning postures. Chris Mah in fact lists quite a lot of questions regarding this behaviour that still needs further study! So much more to discover about our shores!
brittle stars also stand on their toes. Wait a minute, I've seen that before, at Pulau Sekudu in 2004!
massive reclamation for the new Pasir Panjang Container Terminal seems to have gotten taller! It was good to see that the massive dredging close to Cyrene seems to be completed. We didn't see the dredger at all today.
massive work on the Belayar Creek boardwalk seems to be winding down. The huge steel girders seem to be in the process of being removed, and the new slimmer concrete boardwalk can be seen. I still don't understand the need to build such a massive steel working boardwalk which must have severely impacted the lovely natural shores there. The Chek Jawa boardwalk was built with virtually no impact! A pity the same method was not used here, probably the best mangrove and sandy shore on the southern mainland.
They're doing the same thing again at Chek Jawa tomorrow. I'm escaping that to help with the Mega Marine Survey at Sungei Buloh.