Blue Ice Cave, Antarctica, December 2011.

Bow Lake, Icefields Parkway, Canada

Jaghori, Afghanistan

The Canadian Rockies and Moraine Lake

North Manitou Island, MI

Caddo Lake, Texas

Socotra Dragon Trees, Socotra archipelago

Son Doong Cave, Vietnam. The largest cave in the world.

Mica Mine, Alstead, NH

Cave pool, Santorini, Greece

Lagoa do fogo, Azores

A blue lagoon, North Island New Zealand

Glacier in Perito Merino, Argentina