Frozen bubbles in Canadian lakes - Methane gas bubbles underneath Vermillion Lakes in Banff National Park, Alberta, Canada. Normally the bubbles would break the surface but in low temperatures they freeze.
Shockingly Awesome Self Portrait Photography by Luca Pierro. In 2009 he won second prize in the photography competition held by Ichnusa on Sardinia. In 2010 he won first prize at MostraMi in Milan. He currently lives and works in Cagliari.