description Sperosoma obscurum Overview
Sperosoma obscurum is a marine sea urchin in the family Echinothuriidae and genus Sperosoma. Echinothuriids are distinguished by soft, flexible tests made from loosely sutured, overlapping plates, and most live in deep marine environments. The species was described by Agassiz and Clark in 1907, and a review of New Zealand and southeastern Australian material reported records from both regions. [Echinothurioid research](https://www.sciencedirect.com/science/article/pii/S096706450400164X) [regional review](https://pubmed.ncbi.nlm.nih.gov/27394469/)
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How good is Sperosoma obscurum?
Sperosoma obscurum scores 6.22/10 (Fair) on Lunoo, making it rated in the Sea Urchin category. Obscure Sperosoma species, mainly taxonomic literature relevance and limited broader consensus.
What are the best alternatives to Sperosoma obscurum?
See our alternatives page for Sperosoma obscurum for a ranked list with scores. Top alternatives include: Phormosoma placenta, Calveriosoma hystrix, Phormosoma bursarium.
How does Sperosoma obscurum compare to Phormosoma placenta?
See our detailed comparison of Sperosoma obscurum vs Phormosoma placenta with scores, features, and an AI-powered verdict.
Is Sperosoma obscurum worth it in 2026?
With a score of 6.22/10, Sperosoma obscurum is a solid option in Sea Urchin. See all Sea Urchin ranked.
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