22 species in this group
Arbacia
Black sea urchin
Arbacia lixula
Brissus
Groove Burrowing Urchin
Brissus unicolor
Centrostephanus
Hatpin Urchin
Centrostephanus longispinus
Paracentrotus
Purple sea urchin
Paracentrotus lividus
Echinus
Melon Sea Urchin
Echinus melo
Sphaerechinus
Violet Sea Urchin
Sphaerechinus granularis
Echinaster
Red Starfish
Echinaster sepositus
Marthasterias
Spiny Starfish
Marthasterias glacialis
Coscinasterias
White Starfish
Coscinasterias tenuispina
Asterina
Cushion Star
Asterina gibbosa
Ophidiaster
Purple Seastar
Ophidiaster ophidianus
Hacelia
Smooth Starfish
Hacelia attenuata
Holothuria
Black Sea Cucumber
Holothuria forskali
Holothuria
White Spot Cucumber
Holothuria poli
Holothuria
Cotton-spinner
Holothuria tubulosa
Astrospartus
Basket Star
Astrospartus mediterraneus
Ophiura
Serpent Star
Ophiura ophiura
Ophiothrix
Common Brittlestar
Ophiothrix fragilis
Ophioderma
Brown Brittle Star
Ophioderma longicauda
Antedon
Mediterranean feather star
Antedon mediterranea
Chaetaster
Long-armed Starfish
Chaetaster longipes
Stylocidaris
Red Lance Urchin
Stylocidaris affinis