Other species among native sea urchins
25 native species with no plant ties on record, by observations.
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Eccentric Sand Dollar
Dendraster excentricus
11,832 observations
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Five-slotted Sand Dollar
Mellita quinquiesperforata
3,546 observations
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Red Pencil Urchin
Heterocentrotus mamillatus
2,767 observations
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Shingle Urchin
Colobocentrotus atratus
2,339 observations
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Common Sand Dollar
Echinarachnius parma
1,986 observations
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Purple-brown Urchin
Arbacia punctulata
1,514 observations
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Isometric Sand Dollar
Mellita isometra
1,112 observations
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Blue-black Urchin
Echinothrix diadema
1,003 observations
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Keyhole Sand Dollar
Mellita tenuis
602 observations
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Groove Burrowing Urchin
Brissus unicolor
565 observations
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Black Starry Sea Urchin
Arbacia stellata
516 observations
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Fat Sea Biscuit
Clypeaster rosaceus
442 observations
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Crowned Sea Urchin
Centrostephanus coronatus
423 observations
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Six-keyhole Sand Dollar
Leodia sexiesperforata
244 observations
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Red Heart Urchin
Meoma ventricosa
232 observations
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Fragile Sea Urchin
Strongylocentrotus fragilis
185 observations
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Heart Urchin
Lovenia cordiformis
76 observations
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Mud Heart Urchin
Moira atropos
68 observations
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Indo-Pacific Long-spined Urchin
Diadema paucispinum
51 observations
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Magnificent Urchin
Astropyga magnifica
48 observations
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Warty Sand Urchin
Nudechinus verruculatus
36 observations
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Mud Urchin
Brisaster latifrons
34 observations
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Michelin's Sand Dollar
Encope michelini
28 observations
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Long-spined Sea Biscuit
Plagiobrissus grandis
20 observations
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Rhynobrissus cuneus
9 observations