Which Starfish species has up to 24 limbs?

Pycnopodia helianthoides, also known as Sunflower sea star is a species of starfish that can have up to 24 limbs. It is commonly found in subtidal coastal waters from the Aleutian Islands, Alaska, San Diego, California to Mexico.

Sunflower sea starfish can be easily distinguished by their larger body and many limbs.