Category
page 1Echinoderms of the Southern Ocean
Labidiaster annulatus
species of echinoderm
Odontaster validus
species of echinoderm
Promachocrinus
Promachocrinus is a genus of free-swimming, stemless crinoids. It was a monotypic genus, with the only species in the genus being Promachocrinus kerguelensis, until the discovery of four new species, establishment of two others previously described and the transfer of another species to the genus in 2023. Known for being coldwater crinoids, members of Promachocrinus are typically found in the seas around Antarctica and surrounding island groups, including under the sea ice. Previously known for having 20 arms, two of the species now included in the genus have 10 arms. Many of the species are c

Acodontaster conspicuus
species of echinoderm
Anasterias antarctica
species of echinoderm
Sterechinus neumayeri
species of echinoderm

Glabraster
Glabraster is a genus of starfish in the family Poraniidae. It is monotypic, the sole species being Glabraster antarctica. It is also known as the red spiny cushion star.