• Cape Point 2
  • Table Mountain
  • Table Mountain 6
  • Table Mountain 3
  • Table Mountain 4
  • Table Mountain 2
  • Green Point Park 2
  • Green Point Park 1
  • Green Point Park 3
  • Cape Point 1
  • Table Mountain 5
  • Madonna della Serra, Ruffano, Italy

Slideshow

Lichen

Lichens are symbiotic communities of vastly different organisms that have evolved intimately together for billions of years. The fungus provides shelter, water and nutrients. The algae provides energy in the form of sugar from photosynthesis. Just recently scientists discovered that most lichens have a third organism – a yeast – also living in symbiosis. Many of the 20,000 known species of lichen are miniature self-contained ecosystems.

Peter Worthington