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.
Photo of Halimeda
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.