Moss and lichen on a dry stone wall near Elton on a murky spring day, Peak District National Park, Derbyshire, England, United Kingdom, Europe

Gnarled lichen covered stunted oak trees growing in Wistman's Wood, Dartmoor National Park, Devon, England, United Kingdom, Europe

Elegant lichens, Orange Sea Lichen, Caloplaca marina, covering the surface of a small islet in the Beagle Channel, Ushuaia, Argentina, South America

View from Cadillac Mountain, Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America

Bull Point, North Devon, Devon, England, United Kingdom, Europe

Yellow aspen leaves on a lichen-covered rock in the fall, Uncompahgre National Forest, Colorado, United States of America, North America

Moss and lichen covered bark in Patagonian Nothofagus beech forest, Alberto de Agostini National Park, Tierra del Fuego, Chile, South America

Wolf lichen (Letharia vulpina), on Sugar Pines (Pinus lambertiana), Tuolumne Grove of Giant Sequoias, Yosemite National Park, UNESCO World Heritage Site, Sierra Nevada, California, United States of America, North America

View from Cadillac Mountain, Acadia National Park, Mount Desert Island, Maine, New England, United States of America, North America

Bull Point, North Devon, Devon, England, United Kingdom, Europe

Morte Point, Devon, England, United Kingdom, Europe

Adult Antarctic fur seal (Arctocephalus gazella), on lichen-covered rocks in Hercules Bay on South Georgia Island, Polar Regions

Lichen grows on an old Buddhist mani wall (prayer wall) constructed on the trail from Lukla to Tangnag, near Mera Peak, Khumbu region, Nepal, Himalayas, Asia

Tree covered in Old Mans Beard Lichen (Usnea filipendula), Black Isle peninsula, Cromarty, Scottish Highlands, Scotland, United Kingdom, Europe

Rocks and Dwarf birch (Betula nana), autumn colour, Ruska, Kilpisjarvi, Lapland, Finland, Europe

Lichen covered rock and valley, Saksun, Faroe Islands, Denmark, Atlantic, Europe

Lichen covered rocks on high fell, Kilpisjarvi, Lapland, Finland, Europe

A pool coloured red from algae that have been fertilized by seabird guano on the Farne Islands, Northumberland, UK.

Green algae and yellow lichen on the Farne Islands, Northumberland, UK.

Woodland at Grasmere in the Lake District National Park, Cumbria, England, United Kingdom, Europe

Large lichen covered rock in a frozen lake situated on the flats beside hudson's bay, Manitoba canada

Detail Of Lichen On A White Rock, Lake Louise, Alberta, Canada

Old Growth Trees, Louisiana, USA

Close-up of lichen growing on wooden fence railing