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This lateral view of the rays shows the scattered rows of spines, the abundant large pedicellariae and papulae among the spines, and the rows of adambulacral spines along the bottom.
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Orthasterias koehleri from 70 m depth, San Juan Channel. This individual recently lost two of its rays. Ray length is 20 cm. (Photo by: Dave Cowles, July 2008)
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Pisaster ochraceus (Brandt, 1835) Common Names: Ochre sea star, Purple sea star Individual found at Swirl Rocks, WA in the mid-intertidal zone. Top view, approximately 40 cm in diameter. Photo by: Melissa McFadden, June 2002.
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This subtidal seastar frequently has its papulae out, which makes the rays appear smooth and gelatinous as seen here. The aboral ossicles form spines which are single, clustered, or in a network. Photo by Dave Cowles, July 2005
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There are no large marginal plates on the rays. A row of small spines can close over the ambulacral grooves. Photo by Dave Cowles, July 2005
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Pisaster brevispinus, found off Northwest Island, Rosario Bay. Ruler is 12 inches (30 cm). (Photo by: Dave Cowles, July 2005)
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Another individual, with three symbiotic Arctonoe sp scaleworms attached. Ruler is 1 foot (30 cm). Photo by Dave Cowles, July 2005
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The aboral surface has large spines (1-2 mm long) arranged singly. Smaller spines and pedicellariae are arranged in circles around the large spines. Photo by Dave Cowles, July 2005
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There are no large marginal plates on the rays. The stomach can be everted, as it was shortly before this photo. Photo by Dave Cowles, July 2005
