Nidorellia armata (Gray, 1840)
Often referred to as the "chocolate chip" starfish (A common name also applied to Protoreaster nodosus)
Taxonomic info from the World Asteroidea Database. Here.
Occurs primarily in shallow-water in Baja California, Mexico to the Galapagos.
Image from Baja California. Photo by caretta156
From Los Frailes, Cabo Pulmo, Baja California. Spines seem to be picked off/worn down. Photo by Hawkfish.
Another individual from off Isla Espiritu Santo. Photo by tcorbin
Another from the Sea of Cortez. Photo by sherry_jewelry
From Isla Danzante. Photo by David H. Thompson
From Loreto, Mexico. Photo by Captain Kevin
From Cocos Island. Photo by l'herf
From the Galapagos. Photo by Steven Bedard
another from the Galapagos. Photo by lgooch.
From the Galapagos. Photo by CMontoy