SCOTLAND: The Big Picture / Puffin (Fratercula artica) with orange sea lichen (Caloplaca marina) covered roch behind, Shiant Isles, Outer Hebrides, Scotland, UK. June.

SCOTLAND: The Big Picture / Puffin (Fratercula artica) with orange sea lichen (Caloplaca marina) covered roch Shiant Isles, Outer Hebrides, Scotland, UK. June 2018.

SCOTLAND: The Big Picture / Razorbill (Alca torda) on orange sea lichen (Caloplaca marina) covered rock, Shiant Isles, Outer Hebrides, Scotland, UK. June

SCOTLAND: The Big Picture / Razorbill (alca torda) pair on orange sea lichen (Caloplaca marina) covered rock, Shiant Isles, Outer Hebrides, Scotland, UK

Robert Thompson / Lichen (Xanthoria aureola) Ballywhoriskey Point, County Donegal, Northern Ireland. October.

Robert Thompson / Lichen (Xanthoria aureola) Ballywhoriskey Point, County Donegal, Northern Ireland. October.

Robert Thompson / Lichen (Ochrolechia parella) Ballywhoriskey Point, County Donegal, Northern Ireland. October.

Guy Edwardes / Crawfish lichen (Ochrolechia parella) on a gravestone, Unst, Shetland Islands, Scotland, August.

Chris Mattison / Golden lichen (Caloplaca aurantia) Atlantic coast, Algarve, Portugal

Chris Mattison / Lichen zonation showing oil-tar lichen, Verrucaria maura (black zone), Caloplaca sp. and Xanthoria sp. (yellow zone) Mull, Scotland

Chris Mattison / Coastal lichen (Xanthoria aureola) Isle of Mull, Scotland, UK, June.

Alex Hyde / Whiteworm Lichen (Thamnolia vermicularis) growing amongst Trailing / Mountain Azalea (Loiseleuria procumbens). 2500 metres, Nordtirol, Austrian Alps. June.