Glenn Bartley/ BIA / Black-mandibled Toucan (Ramphastos ambiguus) during rainfall, Costa Rica

Glenn Bartley/ BIA / Collared Aracari (Pteroglossus torquatus) during rainfall, Costa Rica

Donald M. Jones / Barren-ground Caribou (Rangifer tarandus groenlandicus) bulls in rainfall, central Alaska

Donald M. Jones / Barren-ground Caribou (Rangifer tarandus groenlandicus) bulls in rainfall, central Alaska

Bert Willaert,Bert Willaert / Portrait of a Spiny-chest Frog (Alsodes norae) endemic to Oncol Park, Chile, January

Bert Willaert,Bert Willaert / Portrait of a Darwin's Frog (Rhinoderma darwinii) Chile, Vulnerable species

Bert Willaert,Bert Willaert / Chilean slender snake (Tachymenis chilensis chilensis) Contulmo Natural Monument, Chile, December

Bert Willaert,Bert Willaert / Chile Four-eyed Frog (Pleurodema thaul) showing how it got its name - eye spots on the back of it's body, Chile, December,. Controlled conditions,

David Pattyn / Stormy coastal landscape with heavy rainfall approaching the coast in very windy conditions with cacti at the edge of the beach, Marao peninsula, Bahia, Brazil, August 2010

Sven Zacek / Waves washing up a beach under dark clouds. Hiiumaa Island, Estonia, Europe, August 2011.

Sven Zacek / Heavy rainfall on the calm surface of the Baltic Sea. Hiiumaa Island, Estonia, Europe, August, 2011.

Marie Read / Taughannock Falls, near Ithaca, New York, in autumn after a day of heavy rainfall. October 2010. At 215 feet, Taughannock Falls is 33 feet taller than Niagara Falls.