Erect with flat, thin blades (laterals) fan-shaped (flabellate) when young and becoming split and lobed when older. Growth is in concentric bands. Matted root-like (rhizoidal) holdfast. Medium to dark brown, iridescent underwater. Up to 6 cm long (thallus).
This seaweed glows with a strong blue iridescence underwater. It sometimes grows as an epiphyte on the seagrass Amphibolis antartica.
Subtidal rocky reefs and on segrasses, sheltered to exposed coasts, to depth of 36 m.
Photosynthetic - sunlight
Recorded in Australia
- DSE Advisory List : Not listed
- EPBC Act 1999 : Not listed
- IUCN Red List : Not listed