''Halimeda opuntia'', sometimes known as the watercress alga, is a species of calcareous green seaweed in the order Bryopsidales. It is native to reefs in the Indo-Pacific region, the Atlantic Ocean and the Mediterranean Sea.
Similar species: Bryopsidales
By Patomarazul
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Uploaded Sep 4, 2022. Captured Nov 10, 2009 13:09 in 7GPQ88HW+RC.