List of echinoderms of Ireland
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There are 75 species of echinoderm (phylum Echinodermata) recorded in Ireland.[1][2][3][4]
Class Asteroidea (sea stars)
Order Forcipulatida
Family Asteriidae
- Asterias rubens (common sea star)
- Leptasterias muelleri (northern sea star)
- Marthasterias glacialis (spiny sea star)
- Stichastrella rosea
Order Paxillosida
Family Astropectinidae
- Astropecten irregularis (sand sea star)
Family Luidiidae
- Luidia ciliaris (seven-armed sea star)
- Luidia sarsi
Order Spinulosida
Family Echinasteridae
- Henricia oculata
- Henricia sanguinolenta (bloody henry)
Order Valvatida
Family Asterinidae
- Anseropoda placenta
- Asterina gibbosa (starlet cushion star)
- Asterina phylactica
Family Poraniidae
Order Velatida
Family Solasteridae
- Crossaster papposus (common sunstar)
- Solaster endeca (purple sunstar, northern sunstar, smooth sun star)
Class Crinoidea (sea lilies, feather stars)
Order Comatulida (feather stars)
Family Antedonidae
- Antedon bifida (rosy feather star)
- Antedon petasus
- Leptometra celtica
Class Echinoidea (sea urchins)
Order Camarodonta
Family Parechinidae
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- Paracentrotus lividus (purple sea urchin)
- Psammechinus miliaris (green sea urchin / shore sea urchin)
Order Clypeasteroida (sand dollars)
Family Echinocyamidae
- Echinocyamus pusillus (pea urchin)
Order Echinoida
Family Echinidae
- Echinus esculentus (European edible sea urchin)
Order Spatangoida (heart urchins)
Family Loveniidae
Class Holothuroidea (sea cucumbers)
Order Apodida
Family Synaptidae
Order Aspidochirotida
Family Holothuriidae
- Holothuria forskali (black sea cucumber / cotton-spinner)
Order Dendrochirotida
Family Cucumariidae
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- Aslia lefevrei
- Cucumaria frondosa (orange-footed sea cucumber)
- Leptopentacta elongata
- Ocnus lacteus
- Ocnus planci
- Paracucumaria hyndmani (Hyndman's sea apple)
- Pawsonia saxicola
- Thyonidium drummondii
Family Phyllophoridae
Class Ophiuroidea (brittle stars)
Order Ophiurida
Family Amphiuridae (long-armed burrowing brittle stars)
- Amphipholis squamata (brooding snake star, dwarf brittle star)
- Amphiura brachiata
- Amphiura chiajei
- Amphiura filiformis
- Amphiura securigera
Family Ophiactidae
Family Ophiocomidae
- Ophiocomina nigra (black brittle star / black serpent star)
- Ophiopsila annulosa
Family Ophiothricidae
[[File:Ophiothrix-fragilis 4338.jpg|thumb|Ophiothrix fragilis photographed in Strangford Lough]
- Ophiothrix fragilis (common brittle star)
Family Ophiuridae
- Ophiocten affinis
- Ophiura albida (serpent’s table brittle star)
- Ophiura ophiura (serpent star)