echinoderms text index | photo index
Phylum Echinodermata > Class Crinoidea > Order Comatulida
Photo index of feather stars on Singapore shores

size given is for diameter of sea star with arms

10-armed
feather star

awaiting identification

Blue
feather star

awaiting identification

Black-and-white
feather star

awaiting identification
   
15cm. The only 10-armed feather star seen in Singapore. On coral rubble. Sometimes seen on our Northern shores. 10-12cm. More than 20 arms, black variegated pinnules on pale arms. Overall effect of a bluish-black animal, sometimes with broad whitish portions and orangey tips. On coral rubble. Seen on many of our shores. 10-12cm. More than 20 arms, black pinnules on pale arms. On coral rubble. Sometimes seen on some of our shores.    

Brown
feather star

awaiting identification

Pale
feather star

awaiting identification

Red
feather star

Himerometra robustipinna
   
12-15cm in diameter. With more than 20 arms. Entire animal mostly a chocolate brown with some white portions. On living corals. Sometimes seen on some of our shores. 12-15cm. More than 20 arms, pale variegated pinnules. On coral rubble near living reefs. Sometimes seen on some of our shores. 6-8cm. More than 20 arms, all red, some with dark pinnules. On coral rubble near living reefs. Sometimes seen on some of our Southern shores.    

These are NOT feather stars

Bristleworms

Phylum Annelida
Class Polychaeta

Brittle star
Phylum Echinodermata
Class Ophiuroidea

Fanworms
Phylum Annelida
Class Polychaeta
Family Sabellidae

Feeding tentacles
of a buried
sea cucumber

Tentacles of a
frilly sea anemone
partially tucked into
the body column.

how to tell apart



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
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