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two brittle stars in a tank
Photo

One Becomes Two

 The two new parts of the original Astrophyton animal just weeks after it...
a sea star splits in two
Photo

Brittle Star Splits

 A large basket star, Astrophyton muricatum, pulls itself apart into two new...
two brittle stars in a tank
Article

Brittle Star Splits

 Splitting your body in two is a feat only a few animals can complete, and now...
January 2020
an orange sea star a top seaweed
Photo

The Ochre Star

 The ochre sea star (Pisaster ochraceus) exhibits the classic five-fold...
a red sea star
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Red Sea Star

 A red sea star from the shore of California. ...
a fringed fossil feather star
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Ancient Crinoid

 A fossilized Platycrinus basicraniatus, a crinoid from the Mississippi period...
a star shaped fossil blastoid
Photo

Blastoid Fossil

 A fossilized blastoid from the Smithsonian's collection. ...
The sea star Odontaster validus and sea urchin Sterechinus neumayeri are often found living in association with one another along the Antarctic coastline, here during the Census of Marine Life.
overview

Echinoderms

 Beachcombers and tide pool explorers may be familiar with sea stars, sea urchins,...