A taxonomic group of corals characterized by having polyps with tentacles in multiples of six, including sea anemones and some corals.
From 'hexa-' (six) plus 'coralla' from Greek 'korallion' meaning coral. This taxonomic classification was established in marine biology to organize corals by their radial symmetry patterns.
Corals and anemones are basically nature's way of arranging tentacles—some come in sets of six, some in sets of eight, and biologists use these number patterns as filing systems for the ocean.
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