How nice to see Knobbly sea stars in spawning position today at Cyrene!
TeamSeagrass volunteers for seagrass monitoring and to help Siti with her seagrass experiment there.
Here's another Knobbly sea star on tip toes! I first observed this behaviour, also on Cyrene, in Aug 2011.
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!
Joining us today is Kristine White, an amphipod expert. And she has found many of her favourite critters on Cyrene! Hurray! Kristine is here with for Singapore's First Marine Biodiversity Expedition which just ended on Friday.
Tape seagrass (Enhalus acoroides) and Sickle seagrass (Thalassia hemprichii). The Noodle seagrass (Syringodium isoetifolium) and Spoon seagrasses (Halophila ovalis) that we saw were alright, and Needle seagrasses (Halodule sp.) less affected. But overall seagrass coverage and the variety of seagrasses seen remains good
about the seagrass situation today on the TeamSeagrass blog.
Stone crabs (Myomenippe hardwickii) in them.
There's so much more to learn and do for our shores!