What is the species name for sunflower starfish?

The sunflower sea star (Pycnopodia helianthoides) is a large predatory starfish with 15-26 limbs called rays. They can grow up to an arm span of 1 m (3 ft.) in diameter. The colour of the sunflower starfish ranges from bright orange, yellow and red to brown and sometimes to purple, with soft, velvet-textured bodies and 16-24 arms with powerful suckers