Appearance
"Discosoma nummiforme" possess a pentagonal-shaped disk which rarely exceeds 2 inches in diameter; however, it is compensated for the variety of rich colours some specimens of this species can possess in the wild. The disk, and the supporting column, can be found in a rich purple-brown colour. The almost entirely sessile tentacles, which are spheroidal in shape, can sometimes be found as a brilliant emerald-green colour; however, some in the species inner confines are found as the same purple-brown colour.References:
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