An order of marine animals that includes sea anemones and related organisms with radially arranged tentacles and a central mouth.
From actinia combined with the Latin suffix -aria, indicating a group or classification; it represents a formal taxonomic order in marine zoology.
Actiniaria is the scientific order name for all sea anemones, and there are over 1,000 species—they've been on Earth for over 600 million years, making them one of nature's most successful body plans!
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