Simple to occasionally branched alga with a flattened main axis arising from moderately slender runner (stolon). Branchlets (ramuli) cylindrical tapering at both ends with slight upward curve and short, spiny tip, arranged in three regular rows (2 when juvenile). Medium green. Up to 25 cm long (thallus).
This seaweed can form a habitat similar to seagrass beds and contain a fish and invertebrate community.
Subtidal rock, pier piles, sandy and muddy sediments, in sheltered waters, to depth of 31 m.
Photosynthetic - sunlight
Native to Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed