A blue lagoon, North Island New Zealand

Xinjiang, China

Denali National Park, AK

Foggy Tree Tunnel - Point Reyes, California

Blue Ice Cave, Antarctica, December 2011.

Lake Washington, WA

Torres del Paine Park, Argentina

Emerald Lake in British Columbia, Canada

El sótano de las golondrinas, San Luis Potosí, México

Dragon Blood Tree, Socotra, Yemen

Jaghori, Afghanistan

Bimmah Sinkhole, Oman

White Pocket, Arizona