Published Dec 10. 2006 - 10 years ago
Updated or edited Sep 22. 2015

Didymo (didymosphenia gem...

Didymo (didymosphenia geminata) is a freshwater algae that forms massive blooms on beds of streams or lake edges that have some wave action. Introduced from Nth America. Can choke out insect life.
Location: 
Some rivers in South Island, New Zealand.

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