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Astropecten articulatus 1 (26-7-19 Boston Museum of Sciences, det as A. comptus)
cc-by-nc-sa
Brbol
Flickr Group
Hacelia attenuata
cc-by-nc-sa
Brbol
Flickr Group
Helmet Urchin
cc-by-nc-2.0
Ken-ichi Ueda
Flickr Group
These crazy urchins seem to dominate the exposed regions of the mid-intertidal on Kauai. I wasn't really even sure what I was looking at when I first saw them, which is just about my favorite experience outdoors.
n634_w1150
cc-publicdomain
Biodiversity Heritage Library
Flickr Group
Echinoderms from AustraliaCambridge, U.S.A. :Printed for the Museum,1938.
biodiversitylibrary.org/page/4374806
Myxaster sol
cc-by-nc-2.0
Katie Gale
Flickr Group
Collected from Newfoundland, 1085 m.
n686_w1150
cc-publicdomain
Biodiversity Heritage Library
Flickr Group
Echinoderms from AustraliaCambridge, U.S.A. :Printed for the Museum,1938.
biodiversitylibrary.org/page/4374157
Remarkable sea cucumber (Holothuria notabilis) secreting white stuff
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Ria Tan
Flickr Group
South West, Singapore
Strongylocentrotus droebachiensis
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Brent Wilson
Flickr Group
Spiny Sunstar, Crossaster papposus, in Newfoundland, Canada
cc-by
Derek Keats
Flickr Group
Starfish and clam, Newfoundland
Tremaster mirabilis
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Katie Gale
Flickr Group
Live specimen collected from Newfoundland, depth unknown.
Asteropsis carinifera (28-9-18 Royal Belgian Institute of Natural Sciences)
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Brbol
Flickr Group
Green Brittle Star, Ophiarachna incrassata (Lamarck, 1816)
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Patrick Randall
Flickr Group
Onna, Okinawa, Japan
n706_w1150
cc-publicdomain
Biodiversity Heritage Library
Flickr Group
Echinoderms from AustraliaCambridge, U.S.A. :Printed for the Museum,1938.
biodiversitylibrary.org/page/4374198
Fromia indica 2 (30-4-15 Acuatec)
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Brbol
Flickr Group
Arbacia punctulata (23-7-19 New England aquarium)
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Brbol
Flickr Group
Ophiomastix annulosa (Lamarck, 1816)
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Patrick Randall
Flickr Group
Onna, Okinawa, Japan
Echinoidea Sea urchin fossil DSCF5243
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Bill & Mark Bell
Flickr Group
Kingdom=AnimaliaPhylum=EchinodermataClass=EchinoideaSubclass=Euechinoidea
Gogia parsleyi (11-12-15 MCN Zaragoza)
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Brbol
Flickr Group
Collector Urchin, Tripneustes gratilla (Linnaeus, 1758)
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Patrick Randall
Flickr Group
Yomitan, Okinawa, Japan
Synapta mammillosa
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Amgueddfa Cymru - National Museum Wales
Flickr Group
Synapta mammillosa
Beautiful pencil urchin - Prionocidaris callista
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John Turnbull
Flickr Group
The beautiful pencil urchin looks quite different from the pencil slate urchin, and is less common. The spines are longer and have serrations.
Poraniella echinulata
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FWC Fish and Wildlife Research Institute
Flickr Group
Scientific name:
Poraniella echinulata
Tiny maretia heart urchin (Maretia planulata)
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Ria Tan
Flickr Group
Singapore, South West, Singapore
Lion's Paw Sea Cucumber, Euapta godeffroyi (Semper, 1868)
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Patrick Randall
Flickr Group
Onna, Okinawa, Japan
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