This sea star reproduces in the spring and summer.
The female pushes herself up on all five arms and releases up to 2 million eggs into the sea. At the same time, the males excrete their sperm. Fertilization then takes place in the open water. The eggs hatch into swimming larvae that, at the age of 2 months, will settle on the seabed and become young sea stars. Some adult specimens will reach the maximum size of 50 cm in diameter.