Daniel Heuclin / Sunbeam snake (Xenopeltis unicolor) captive, occurs in South East Asia.

Murray Cooper / Shining Sunbeam (Aglaeactis cupripennis) hummingbird feeding on flower nectar, Colombia

Murray Cooper / Shining Sunbeam (Aglaeactis cupripennis) hummingbird at nest, Ecuador

Cyril Ruoso / Shining sunbeam (Aglaeactis cupripennis) feeding, Colca canyon, Peru, November.

Chien Lee / Sunbeam Snake (Xenopeltis unicolor), Taman Stutong Indah, Kuching, Malaysia

Alex Mustard / Shafts of light shine down into the darkness of cavern within coral reef. Jackfish Alley, Ras Mohammed Marine Park, Sinai, Egypt. Red Sea.

Alex Mustard / Shafts of light shine down into the darkness of cavern within coral reef, with Soldierfish (Holocentridae) and Goatfish ( Mullidae) Sha'ab Claudia, Fury Shoal, Egypt. Red Sea.

Michel Roggo / Light rays shining throught the Cenote Tajma-Ha, Quintana Roo, Yucatan Peninsula, Mexico, February. Taken for the Freshwater Project.

Michel Roggo / Underwater landscape of Cenote Tajma-Ha, Quintana Roo, Yucatán Peninsula, Mexico, February 2014. Taken for the Freshwater Project.

Michel Roggo / Underwater landscape of the Clearwater river, outside Clearwater cave. Tributary of the Sungai Melinau river, Gunung Mulu National Park, Sarawak, Borneo, Malyasia, March 2012. Taken for the Freshwater...

Michel Roggo / Small tributary of the Sungai Melinau river, Gunung Mulu National Park, Sarawak, Borneo, Malyasia, March 2012. Taken for the Freshwater Project.

Michel Roggo / Underwater view of Anhumas Abyss, a lake within a cave, Bonito area, Serra da Bodoquena (Bodoquena Mountain Range), Mato Grosso del Sul, Brazil, November 2011. Taken for the Freshwater Project.