California's offshore seafloors have been missing a massive, colorful predator that keeps kelp-munching sea urchins in check.

By nurturing sunflower sea stars in captivity, researchers aim to one day restore a key predator to the Pacific Ocean.

A mysterious disease nearly wiped out sunflower stars in 2013. But sunflower stars may once again dot the seabed, thanks to ...

The final week of the year will bring low tides to San Diego's coastline, giving tide poolers one more chance this month to ...

The sunflower sea star is a big starfish — more than 3 feet across — that roams the ocean floor in orange, yellow and purple.