Note:

Impropriamente creduto il maschio del Paracentrotus Lividus, ha colore nero e scheletro sferico di colore verde.

Tassonomia:

Domain: Eukaryota Whittaker & Margulis,1978 - eukaryotes
Kingdom: Animalia Linnaeus, 1758 - Linnaeus, 1758 - animals
Subkingdom: Bilateria (Hatschek, 1888) Cavalier-Smith, 1983 - (Hatschek, 1888) Cavalier-Smith, 1983 - bilaterians
Branch: Deuterostomia Grobben, 1908 - Deuterostomes
Infrakingdom: Coelomopora (Marcus, 1958) Cavalier-Smith, 1998
Phylum: Echinodermata Klein, 1734 ex De Brugière, 1789 - Echinoderms
Subphylum: Echinozoa
Class: Echinoidea (ek-in-OY-dee-a) - Sea Urchins and Sand Dollars
Subclass: Euechinoidea
Superorder: Echinacea (ek-in-AY-shee-uh) - Purple coneflower [Latin, echinus, sea urchin, alluding to spiny tips of receptacular paleae]
Order: Arbacioida
Family: Arbaciidae
Scientific name: Arbacia lixula