Sunflower sea star
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Pycnopodia helianthoides, commonly known as the sunflower sea star, is a large sea star found in the northeastern Pacific Ocean. The only species of its genus, it is among the largest sea stars in the
Pycnopodia helianthoides SLO CA
Underside of a sunflower sea star
MacDonald Spit, Alaska, 2022
Top of sunflower sea star
Starfish
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Starfish or sea stars are a class of echinoderms generally shaped like a star polygon. Starfish are also known as asteroids because they form the taxonomic class Asteroidea. About 1,900 species of sta
Sunflower sea star
…Pycnopodia helianthoides, commonly known as the sunflower sea star, is a large sea star found in the northeastern Pacific Ocean. The only species of its genus, it is among the largest sea stars in the world, with a maximum arm span of 1 m…
Luidia maculata, a seven armed starfish
Astropecten aranciacus ossicles
Pedicellariae and retracted papulae among the spines of Acanthaster planci
Pedicellaria and papulae of Asterias forbesi