[2] The thalli are composed of erected feathery or plumose branches that arise from creeping stolons attached to substrate with the aid of rhizoids.

Creeping, harpoon-like barbed branchlets are uniquely found in Asparagopsis armata, which contributes to its status as one of the worst invasive species in the temperate regions.

[citation needed] It is an interesting note that the cryptic lineages of Asparagopsis taxiformis line exhibit different morphological characteristics.

Results show that there is a difference between these structures of A. taxiformis cryptic lineages, on which a revision of the taxonomic status of this species has been proposed.

[8] Asparagopsis armata, a native species from Australia and New Zealand, has spread its population strictly in the temperate region, particularly in Europe.

Due to its invasive capacity, the presence of Asparagopsis has an effect on the distribution and abundance of other marine organisms, such as peracarid crustaceans.

[9] Assemblage of epifaunal communities in the Mediterranean Sea shows a decrease in diversity and homogenised distribution compared with other associated seaweeds present in the area.

[10] The genus Asparagopsis, is used as food for human consumption; for medicinal applications: antibacterial, antimicrobial, antibiotic, and goitre, among others, and cosmetics.

It has been shown to convert much of the enteric methane (a powerful greenhouse gas) to energy (and some carbon dioxide) for cattle during normal digestion.

[21] Subsequent to the Australian study, CSIRO established FutureFeed Pty Ltd., which holds the global intellectual property (IP) rights for the use of Asparagopsis for livestock feed, with the aim of significantly reducing enteric methane emissions in ruminants.

[25] Others include Sea Forest,[26] also in Australia, Symbrosia[27] and Blue Ocean Barns[28] in the USA, and Volta Greentech in Sweden.

[36] In 2022-23, Meat & Livestock Australia published a study of the use of Asparagopsis with canola oil as a carrier, in the "finishing diet" of penned Wagyu cattle.