in-a-sponge brittle stars
tiny brittle stars are commonly seen in living Chocolate
sponges (Spheciospongia cf. vagabunda) on many of
They are sometimes also seen in other kinds of sponges.
Features: Whole animal 1-2cm.
5-6 arms. Arms banded with short spines lying flat arong the arms.
Central disk rarely seen outside its hiding place. Sometimes, larger
brittle stars with white arms are also seen in the same sponge. A
single sponge may be home to lots of brittle stars, each hole in the
sponge sheltering one tiny brittle star. With their arms waving out,
the brittle stars give the submerged sponge a 'furry' look.
Sometimes confused with tiny
brittle stars seen under stones and bristleworms.
Here's more on how to tell apart
bristleworms and brittle stars.
Baby brittle stars: This brittle
star can reproduce sexually as well as asexually by division of the
central disk, each half regenerating arms and other body parts to
produce two new animals!
In a Chocolate sponge.
Chek Jawa, Jun 06
The arms of countless brittle stars
can make a sponge appear 'hairy'.
Outside the sponge?
Pulau Sekudu, Jun 05
are difficult to positively identify without close examination.
On this website, they are grouped by external features for convenience of
in-a-sponge brittle stars on Singapore shores
Terumbu Pempang Laut, May 15
Photo shared by Marcus Ng on facebook.