page_title: Plectaster decanus
section_title: Description
hierarchical_section_title: Plectaster decanus / Description
caption_attribution_description: English: Mosaic seastar Plectaster decanus at Michaelmas Reef in King George Sound, South Australia.
context_page_description: Plectaster decanus, the mosaic sea star, is a species of sea star found off the south coast of Australia. It is the only species in the genus Plectaster.
context_section_description: This five-armed starfish is distinguished by its very bright colors. A group of raised yellow ridges covers its red upper surface and it is soft in texture. Plectaster decanus is one of the few poisonous sea stars, and can cause numbness in humans if it is carried for any length of time.
caption: Plectaster decanus
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