The sunflower star (Pycnopodia helianthoides) is the largest sea star in the world, reaching an arm span ... this uniquely puffy starfish is found in shallow waters on coral reefs and rubble ...

“The cascading effect has a really big impact,” Gaydos said. The crash in sunflower starfish corresponds with ... “A warmer world is a sicker world,” she said. “That is why we have ...

and a type of starfish is partly to blame for the alarming decline. Mark Eakin, head of NOAA's Coral Reef Watch program, discusses how to save the world's largest coral reef system. This is ...