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Halimeda (Halimeda tuna)

Photo of Halimeda (Halimeda tuna)

Key facts

Scientific name
Halimeda tuna
Common name
Halimeda
Category
Algae
Family
Halimedaceae
Genus
Halimeda
Size
5–15 cm
Depth
1–70 m
IUCN status
Least concern (LC)
Danger level
Harmless
Habitats
rocky, reef
Behaviours
sessile, photosynthetic
Ocean zones
Asian Pacific, Caribbean, East Atlantic, Indian Ocean & Red Sea, Mediterranean, Eastern Pacific

Description

Halimeda tuna reaches 15 cm. Green alga made of flattened calcified segments linked in a chain resembling a miniature cactus. Older segments detach and actively contribute to calcareous sand formation on Mediterranean bottoms. Lives on rocky walls and rubble from 1 to 70 m. Slow growing. Major ecological role in carbonate sedimentation on reefs and coralligenous drop-offs.

Frequently asked questions

How big is the Halimeda?
Halimeda (Halimeda tuna) reaches 5–15 cm in length.
At what depth can you find the Halimeda?
Halimeda is found between 1–70 m deep.
Is the Halimeda dangerous to divers?
Danger level: Harmless.
What is the conservation status of the Halimeda?
IUCN status: Least concern (LC).
Where can you find the Halimeda?
Found in: Asian Pacific, Caribbean, East Atlantic, Indian Ocean & Red Sea, Mediterranean, Eastern Pacific.

Other species in the genus Halimeda

  • Halimeda incrassata - Thickened Halimeda
  • Halimeda opuntia - Opuntia Halimeda

Sources

  • Taxonomy: WoRMS (AphiaID 144483)
  • Photos: iNaturalist (CC BY-NC)
  • Distribution: GBIF (taxonKey 2643307)
  • Conservation: IUCN Red List
  • Encyclopedia: Wikipedia