- Kingdom: Animalia
- Phylum: Echinodermata
- Subphylum: Asterozoa
- Class: Asteroidea
- Order: Velatida
- Family: Pterasteridae
- Scientific name: Pteraster militaris
- Norwegian: -
Typical for the Pterasteridae family members are the spined papillae on the dorsal side. A soft skin is covering the spines, giving the surface of these sea stars a untidy, bumpy appearance. There are two to five spines on each papilla, in contrast to the similar, but smaller, Pteraster pulvillus, on which the papillae have 8-15 spines. P. militaris may reach a diameter of 85 mm, while P. pulvillus does not exceed 40 mm.
The color of P. militaris is white, pale yellow or orange. It has five, sometimes red-tipped, arms. A third member of this family, P. obscurus has 6-8 arms.
It seems most frequent on rocky substrate, deeper than 20 meters.
This is a circumpolar species, found in the Arctic as well as the northern parts of the Pacific and Atlantic Ocean, as far south as the North Sea and New Foundland.