talking points for nature guides
echinoderms text index | photo index
Phylum Echinodermata > Class Stellaroida > Order Asteroidea
Photo index of sea stars on Singapore shores
small sea stars <10cm

size given is for diameter of sea star with arms



Cryptic sea star
Cryptasterina sp.



Crown sea star
Aquilonastra coronata



Red scaly sea star
Nepanthia belcheri



Pale scaly sea star
Nepanthia maculata



Galloping sea star

Stellaster equestis
3-4cm. Arms so short that it appears almost pentangonal. Under stones near the mid-water mark. Some parts of Pulau Semakau. 3-5cm. Body plump (not flat), 5 arms short plump with rounded tips. Colours plain or mottled beige, brown or grey. Sometimes, bright orange. Under stones, on coral rubble, sometimes in seagrass areas nearby. Commonly seen on our Northern shores. 5-7cm. Body rounded (not flat) with long half-cylindrical arms with rounded tips. Usually 5 arms, but 4 and 6 arms seen. Upperside with tiny scales, stubby tube feet emerge among the scales. Upper surface blends well with the muddy bottom. Underside reddish. Sometimes seen on sandy areas near seagrasses. Sometimes seen on our Northern shores. About 11cm. Body rounded (not flat) with long half-cylindrical arms with rounded tips. Upperside with tiny scales, stubby tube feet emerge among the scales. Underside plain. Rare. About 8cm. Long skinny arms with large smooth marginal plates, sparse short stumpy spines. Underside is white with colourful markings. Seen once at Sentosa.

Plain sand star
Astropecten indicus

Painted sand star
Astropecten sp.

Bordered sea star
Craspidaster hesperus

Tiny seven-armed coral star
Aquilonastra anomala
 
4-6cm. Body rather flat. Arms long, tapered to a sharp tip with stout flat pointed spines on the sides. Spines tinged a bright orange. Tube feet pointed. Colours plain bluish brown, with a darker brown centre and stripes down the length of the arms. The tips of the arms are black. Sandy shores. Commonly seen on our Northern shores. 6-8cm. Body rather flat. Arms long, tapered to a sharp tip with large marginal plates, stout flat pointed spines on the sides. Spines tinged a pale orange. Tube feet pointed. Colours a light blue background with darker blue stripes down the length of the arms with black tips. Sometimes with darker blue bands near the arm tips. Sandy shores. Commonly seen on our Northern shores. About 10cm. Body flat. Arms long, tapered to a sharp tip with large marginal plats, no spines. Usually blue. Rarely seen. On our Northern shores near reefs. About 2 cm. Arms sometimes unequal, usually seven. On living reefs. Sometimes seen on our Southern shores.  

These are NOT sea stars

Sea anemone
Phylum Cnidaria

Sea anemone
Phylum Cnidaria
     
A sea anemone with a few tentacles may appear to be a sea star or a feather star. A sea anemone with a few tentacles may appear to be a sea star or a feather star.      
www.flickr.com
FREE photos of sea stars. Make your own badge here.
photo index of
echinoderms on this site
Phylum Echinodermata
all echinoderms

With arms

  many, feathery
feather stars

five, bristley
brittle stars

sea stars
small <10cm

large >10cm

Hard
  flat, coin-like
sand dollars

spherical, spiny
sea urchins
heart urchins

Soft

  sea cucumbers
short <10cm
long >10cm
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