sea stars text index | photo index
Phylum Echinodermata > Class Stelleroida > Subclass Asteroidea > Genus Luidia
Six-armed Luidia sea star
Luidia penangensis
Family Luidiidae
updated Mar 2020
Where seen? This elegant sea star is seldom seen. So far, only our Northern shores at Chek Jawa and Changi. According to Lane, it was recorded from the Changi-Ubin-Tekong area.

Features: Diameter with arms to 8-10cm. Six arms. The arms are long, with slight constriction at the base, slightly rounded, and tapered to a pointed tip, edged with tiny spines along the sides. The upper surface of the body is covered with special flat-topped, pillar-like structures called paxillae. The underside is pale, and from grooves along the arms emerge large tube feet with pointed tips, sometimes sometimes yellowish or bright orange. The upperside is beige, greyish or pink; plain or with a darker stripe along the arms.

Chek Jawa, Jan 09


Pointed tube feet.

Six-armed Luidia sea stars on Singapore shores
On wildsingapore flickr

Other sightings on Singapore shores

Changi Creek, Jan 21

Photo shared by Marcus Ng on facebook.

Links References
  • Lane, David J.W. and Didier Vandenspiegel. 2003. A Guide to Sea Stars and Other Echinoderms of Singapore. Singapore Science Centre. 187pp.
  • Didier VandenSpiegel et al. 1998. The Asteroid fauna (Echinodermata) of Singapore with a distribution table and illustrated identification to the species. The Raffles Bulletin of Zoology 1998 46(2): 431-470.
links | references | about | email Ria
Spot errors? Have a question? Want to share your sightings? email Ria I'll be glad to hear from you!
wildfactsheets website©ria tan 2008