Biodiversity & Conservation

Starfish, brittlestars, sea urchins & sea cucumbers (Echinodermata)

Feather stars and sea lilies (Crinoidea)
Starfish, sea stars, cushion stars and brittlestars (Stelleroidea)
Sea urchins, heart urchins and sand dollars (Echinoidea)
Sea cucumbers (Holothuroidea)

Feather stars and sea lilies (Crinoidea)

Rosy feather-star
Antedon bifida

Advanced / Intermediate / Basic

A feather star
Antedon petasus

Intermediate / Basic

A crinoid
Leptometra celtica

Intermediate / Basic

Starfish, sea stars, cushion stars and brittlestars (Stelleroidea)

Goose foot starfish Anseropoda placenta Intermediate / Basic	Common starfish Asterias rubens Advanced / Intermediate / Basic	A cushion star Asterina gibbosa Intermediate / Basic	A cushion star Asterina phylactica Intermediate / Basic	A sand star Astropecten irregularis Intermediate / Basic
Common sun star Crossaster papposus Intermediate / Basic	Red starfish Echinaster (Echinaster) sepositus Intermediate / Basic	Bloody Henry starfish Henricia oculata Advanced / Intermediate / Basic	Northern starfish Leptasterias (Leptasterias) muelleri Intermediate / Basic	Seven-armed starfish Luidia ciliaris Intermediate / Basic
Spiny starfish Marthasterias glacialis Intermediate / Basic	A cushion star Porania (Porania) pulvillus Intermediate / Basic	Purple sun star Solaster endeca Intermediate / Basic	Small brittle star Amphipholis squamata Intermediate / Basic	Sand burrowing brittlestar Acrocnida brachiata Intermediate / Basic
A brittlestar Amphiura chiajei Advanced / Intermediate / Basic	A brittlestar Amphiura filiformis Advanced / Intermediate / Basic	A brittlestar Asteronyx loveni Intermediate / Basic	A cushion star Hippasteria phrygiana Intermediate / Basic	Crevice brittlestar Ophiopholis aculeata Intermediate / Basic
Common brittlestar Ophiothrix fragilis Advanced / Intermediate / Basic	Black brittlestar Ophiocomina nigra Intermediate / Basic	Gravel brittlestar Ophiopsila annulosa Intermediate / Basic	A brittlestar Ophiopsila aranea Intermediate / Basic	Serpent’s table brittlestar Ophiura albida Intermediate / Basic
A brittlestar Ophiura ophiura Intermediate / Basic

Sea urchins, heart urchins and sand dollars (Echinoidea)

Spiny mudlark Brissopsis lyrifera Advanced / Intermediate / Basic	Sea potato Echinocardium cordatum Advanced / Intermediate / Basic	Edible sea urchin Echinus esculentus Advanced / Intermediate / Basic	Purple sea urchin Paracentrotus lividus Intermediate / Basic	Green sea urchin Psammechinus miliaris Advanced / Intermediate / Basic
Purple heart urchin Spatangus purpureus Intermediate / Basic	Northern sea urchin Strongylocentrotus droebachiensis Intermediate / Basic	A pea urchin Echinocyamus pusillus Intermediate / Basic

Sea cucumbers (Holothuroidea)

Cotton spinner Holothuria (Panningothuria) forskali Intermediate / Basic	A sea cucumber Labidoplax media Intermediate / Basic	A sea cucumber Parastichopus tremulus Intermediate / Basic	A sea cucumber Labidoplax digitata Intermediate / Basic	Brown sea cucumber Aslia lefevrei Intermediate / Basic
A sea cucumber Cucumaria frondosa Intermediate / Basic	A sea cucumber Leptopentacta elongata Intermediate / Basic	Gravel sea cucumber Neopentadactyla mixta Advanced / Intermediate / Basic	A sea cucumber Ocnus planci Intermediate / Basic	Sea gherkin Pawsonia saxicola Intermediate / Basic

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