Halymenia a genus of a macroscopic red algae that grows in oceans worldwide.

[1] Species have been found in cold temperate areas but the highest diversity is found in warm temperate and tropical regions.

For example, 41 names have been reported for the Indo-Pacific (Guiry & Guiry, 2011).

Silva et al. (1996) listed 22 names (including two varieties) for the Indian Ocean.

This Rhodophyta-related article is a stub.