Animal Species:Spiny Sea Urchin

The Spiny Sea Urchin has long, needle-like spines, which it wedges in cracks and crevices to secure itself to rocks.

Spiny Sea Urchin Centrostephanus rodgersii

Dr Isobel Bennett © Australian Museum

Standard Common Name

Spiny Sea Urchin

Identification

The spines of the Spiny Sea Urchin may have a green iridescence, while the test (body) varies in colour from deep red to black.

Size range

17 cm

Distribution

The Spiny Sea Urchin is found in New South Wales, Victoria and Tasmania.

Habitat

Spiny Sea Urchins live on intertidal rocky shores and in coastal waters to a depth of 35 m.

Other behaviours and adaptations

This species has been linked to changes in abalone populations. The Spiny Sea Urchin is usually found in large numbers and affects the ecology of the reef by clearing areas of kelp, causing barren areas known as white rock.

Classification

Species:
rodgersii
Genus:
Centrostephanus
Family:
Diadematidae
Order:
Diadematoida
Class:
Echinoidea
Phylum:
Echinodermata
Kingdom:
Animalia

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Tags sea urchins, echinoderms, invertebrates, wildlife of sydney, identification, marine,