description Protenaster australis Overview
Protenaster australis is a living irregular sea urchin in the order Spatangoida and family Schizasteridae, commonly described as a heart urchin. It is associated with southern Australia and lives buried in shallow sandy seabeds rather than being known only from fossils. Western Australian Museum specimens collected off Trigg Beach were found in about 1.8 metres of water and buried roughly 10 centimetres in fine calcareous sand. When exposed, the animals burrowed back into the sediment.
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How good is Protenaster australis?
Protenaster australis scores 6.12/10 (Fair) on Lunoo, making it rated in the Sea Urchin category. Obscure irregular echinoid with specialist taxonomic visibility and limited aggregate reputation.
What are the best alternatives to Protenaster australis?
See our alternatives page for Protenaster australis for a ranked list with scores. Top alternatives include: Lovenia woodsi, Palaeopneustes cristatus, Echinocardium cordatum.
How does Protenaster australis compare to Lovenia woodsi?
See our detailed comparison of Protenaster australis vs Lovenia woodsi with scores, features, and an AI-powered verdict.
Is Protenaster australis worth it in 2026?
With a score of 6.12/10, Protenaster australis is a solid option in Sea Urchin. See all Sea Urchin ranked.
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