Maine, USA - November 2013; Seen along the shore path at Bar Harbour, Maine USA. A lichen is a composite organism formed by algae or cyanobacteria (or

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Maine, USA - November 2013; Seen along the shore path at Bar Harbour, Maine USA. A lichen is a composite organism formed by algae or cyanobacteria (or both) living among filaments of a fungus in a symbiotic relationship. Immensely tough and slow growing, it can cling to just about anything.

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Photo credit: © Jon Bower / Alamy / Afripics
License: Licensed
Model Released: No

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