167,923 species and infraspecific names are in the database, 22,997 images, 65,082 bibliographic items, 513,722 distributional records.

About AlgaeBase

Pleurosigma elongatum W.Smith

Mychodea disticha Harvey Cape Peron, Western Australia; epiphytic on Amphibolis antarctica
© J.M. Huisman

What is AlgaeBase?

AlgaeBase is a database of information on algae that includes terrestrial, marine and freshwater organisms. For convenience, we have included the sea-grasses, even though they are flowering plants.

Copyright and Intellectual Copyright

Copyright and other intellectual property rights worldwide for the data compilation are claimed by AlgaeBase.


Many organisations and people have, funded supported and contributed to AlgaeBase since its small beginnings on 20 March 1996. A full list is here.

We particularly appreciate the support of Dr J.A. West and Dr P.W. Gabrielson.


Programming is currently by Pier Kuipers of Source Code Development, Ltd..


Please bookmark www.algaebase.ORG rather than www.algaebase.COM. The latter leads to a site that has nothing to do with us.

Permanent Links

You can put in permanent links to AlgaeBase on your site like this:

Each one of these URLs will search for whatever you put in.

Citing AlgaeBase

Cite AlgaeBase as: Guiry, M.D. & Guiry, G.M. 2022. AlgaeBase. World-wide electronic publication, National University of Ireland, Galway.; searched on 05 October 2022.


Many people at the National University of Ireland Galway contributed to AlgaeBase. In particular, Ms Eilís Nic Dhonncha in the period 1996-97 and 1999-2005; Dr Fabio Rindi (1999-2006), Dr Robert Wilkes, Mr Andy Taylor, Ms Sandy Lawson, Dr Róisín Nash, and Ms Liz Moran. We are most grateful to all of them.


AlgaeBase is often a compromise of taxonomic opinions that may or may not reflect your particular conclusions. It is also a work in progress, and is thus not entirely complete. Please note that AlgaeBase is purely meant as an aid to taxonomic studies and not a definitive source in its own right. You should always check the information included prior to use.

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