Pisaster is a genus of Pacific sea stars that includes three species, P. brevispinus, P. giganteus, and P. ochraceus. Their range extends along the Pacific coast from Alaska

Alaska

Alaska is the largest state in the United States by area. It is situated in the northwest extremity of the North American continent, with Canada to the east, the Arctic Ocean to the north, and the Pacific Ocean to the west and south, with Russia further west across the Bering Strait...

 to southern California

California

California is a state located on the West Coast of the United States. It is by far the most populous U.S. state, and the third-largest by land area...

 in the intertidal zone. Pisasters can reach up to 70 cm (27.6 in) in width and typically have five arms. Colour variations include ochre, brown, orange, and purple.

Species

• (Giant) Pink or Short-spined Sea Star
  Pisaster brevispinus
  Pisaster brevispinus, commonly called the Pink Sea Star, Giant Pink Sea Star, or Short-spined Sea Star, is a Pacific Ocean sea star.-Description:...
  
   – Pisaster brevispinus
• Giant Sea Star
  Giant sea star
  The Giant sea star, Pisaster giganteus is a species of sea star that lives along the western coast of North America from Southern California to British Columbia. It makes its home on rocky shores near the low tide mark. It preys on mollusks. It can grow as large as 24 inches in diameter. Its color...
  
   – Pisaster giganteus
• Ochre Sea Star
  Ochre Sea Star
  Pisaster ochraceus, generally known as the Purple Sea Star, Ochre Sea Star or Ochre Starfish, is a common starfish found among the waters of the Pacific Ocean.-Description:...
  
  – Pisaster ochraceus