Halimeda opuntia

Halimeda opuntia
The sea slug Nembrotha cristata on Halimeda opuntia, found in Timor Leste
Scientific classification
Kingdom: Plantae
Division: Chlorophyta
Class: Ulvophyceae
Order: Bryopsidales
Family: Halimedaceae
Genus: Halimeda
Species:
H. opuntia
Binomial name
Halimeda opuntia
(Linnaeus) J.V.Lamouroux, 1816
Synonyms
  • Corallina opuntia Linnaeus, 1758
  • Flabellaria multicaulis Lamarck, 1813
  • Fucus prolifer M.Blanco, 1837
  • Halimeda cordata J.Agardh, 1887
  • Halimeda multicaulis (Lamarck) J.V.Lamouroux, 1816
  • Halimeda triloba Decaisne, 1842

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.