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Agarophyton vermiculophyllum
Image courtesy of European Network on Invasive Alien Species: NOBANIS. Available from Data of access 2/16/2017.
Agarophyton vermiculophyllum
Taxonomic Group: Algae


Agarophyton vermiculophyllum is a red seaweed which is native to the Northwest Pacific, including the coasts of Japan, Korea, China, and Vietnam. It is introduced on both coasts of North America and Europe. Species of the genera Agarophyton are difficult to identify morphologically, but modern molecular analyses are resulting in extensive revisions to their taxonomy and distribution. A. vermiculophyllum is found in a wide range of habitats throughout it's global range, including estuaries, mudflats, seagrass beds, and marshes, where it can withstand large variations in salinity and temperature. It typically grows attached to hard substrates, such as shells, stones or tubeworms, but can also grow as large unattached and drifting mats. Its impacts are wide-ranging and varied, in some habitats it replaces or partially replaces native algal and seagrass communities, but in others, it increases habitat complexity, causing a rise in the diversity and abundance of invertebrates.

* Content for this species is based on the literature and peer review is pending - if you have comments or feedback please contact Paul Fofonoff at

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Fofonoff PW, Ruiz GM, Steves B, Simkanin C, & Carlton JT (2018)
National Exotic Marine and Estuarine Species Information System.
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Marine Invasions Lab
Smithsonian Environmental Research Center

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