Aegagrophila linnaei is a filamentous green algae in freshwater and some brackish-water coastal habitats and has three different growth forms:
The lake balls have been the source of much fascination and are on stamps issued in Iceland and Japan. In the Hokkaido district of Japan they are part of the local folklore where each year is held a 3-day ceremony focused on these balls.
Get a detailed classification of the different growth forms of Aegagrophila linnaei.
Aegagrophila linnaei has a worldwide distribution and, in particular, the lake balls have gathered significant interest in some countries. Find out where this species can be found around the world and the types of habitat it grows in.
Discover the factors that contribute to the growth and form of Aegagrophila linnaei.
Find out about the reproductive processes of Aegagrophila linnaei.
Learn why Aegagrophila linnaei is protected in a number of countries and find out the status of the species in the British Isles.
Get reference matierial for Aegagrophila linnaei.
Close view of mass of soft Aegagropila balls in Loch Bruggan where the water is brackish.
Low power microscopic view of the branched filaments of Aegagropila (photo Chris Carter).
Dense masses of Aegagropila ballsphotographed in September 2009 within a bay in Loch Bruggan on the island of South Uist, Outer Hebrides, Scotland.
High power view of cells showing details of branch pattern (photo Chris Carter)
View of a portion of the dense carpet form of Aegagropila.
Small and hard Aegagropila balls floating on the surface of the freshwater Loch Ollay on South Uist, Outer Hebrides, Scotland.