Distribution: Ceduna to Cape Jervis, including NE Kangaroo Island
Habitat: Algae and seagrass beds. Occasionally rocky reef
Depth: 6 cm
This species of sea urchin is usually found draped in sea lettuce (Ulva) or other algae. It has uniformly dark primary spines amongst thickets of tiny white secondary spines. Its tube feet are organised in bands between the spines and are white in colour. It is easily mistaken for other Amblypneustes species but the uniformly dark spines distinguish it, particularly from the more common A. elevatus, which also has yellow-tipped tube feet.
