Starfish do not have arms, but a five-pointed head, study says - The Washington Post

New research in the journal Nature unlocks a mystery on why sea stars have their star shape. But another mystery remains.

What happened to sunflower sea star? This lab is working to find out

After mysterious die-off, sea stars making a comeback – Press Telegram

Molecular evidence of anteroposterior patterning in adult echinoderms - preLights

Threatened listing proposed for sunflower sea star after population devastated by wasting disease

Hope after a gruesome marine disease: spotting the critically endangered sunflower sea star in Washington

After mysterious die-off, sea stars making a comeback – Orange County Register

Sunflower sea star - Wikipedia

What happened to sunflower sea star? This lab is working to find out

The Echinoblog: Helping out our friends at National Geographic with some additional information