One of the largest in the world, with arm spans extending more than 4 feet, discovered deep within the Gulf of Mexico. A ...

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 Sunflower Sea Star is the world's largest starfish - it has up to 24 arms and is able to grow to over a metre in diameter. This Pacific Coast keystone species was assessed as Endangered.

A starfish has five identical arms with a layer ... could help answer some of the biggest remaining questions about echinoderms, including their shared ancestry with humans and other animals ...

A starfish that washed up on a Texas shore has social media amazed, but wildlife experts say the creature isn’t too rare. Christina Biery shared photos and video to Facebook on Wednesday ...

Scientists are always baffled when odd animals show up in unlikely places, especially without a logical explanation. That is ...